diff --git a/Classes/Controller/CategoryController.php b/Classes/Controller/CategoryController.php
index 029704a..2b73acc 100644
--- a/Classes/Controller/CategoryController.php
+++ b/Classes/Controller/CategoryController.php
@@ -115,10 +115,6 @@ public function contactListAction(\Slub\SlubEvents\Domain\Model\Category $catego
             }
         }
 
-        #if ($category != NULL) {
-        #	$events = $this->eventRepository->findAllGbByCategory($category);
-        #}
-
         // get Default Category
         if (is_null($category)) {
             $category = $this->categoryRepository->findDefaultGeniusbarCategory();
diff --git a/Classes/Domain/Repository/EventRepository.php b/Classes/Domain/Repository/EventRepository.php
index 81628e7..4c2125e 100644
--- a/Classes/Domain/Repository/EventRepository.php
+++ b/Classes/Domain/Repository/EventRepository.php
@@ -124,7 +124,6 @@ public function findEventByContact($contact, $category = null)
         if ($category != null) {
             $constraints[] = $query->in('categories.uid', explode(',', $category));
         }
-        $constraints[] = $query->greaterThan('max_subscriber', 'subscribers');
         $constraints[] = $query->greaterThan('start_date_time', strtotime('today'));
 
         if (count($constraints)) {
diff --git a/Documentation/Settings.cfg b/Documentation/Settings.cfg
index e08ad10..d27ea8a 100644
--- a/Documentation/Settings.cfg
+++ b/Documentation/Settings.cfg
@@ -1,6 +1,6 @@
 [general]
 project     = SLUB Event Management
-release     = 5.0
+release     = 5.1
 t3author    = Alexander Bigga
 copyright   = 2013-2021 by the author
 description = Tool for event registration and experts booking.
diff --git a/Resources/Private/Partials/Event/GbItem.html b/Resources/Private/Partials/Event/GbItem.html
index e4424d6..04c036a 100755
--- a/Resources/Private/Partials/Event/GbItem.html
+++ b/Resources/Private/Partials/Event/GbItem.html
@@ -5,7 +5,7 @@
 	<f:render partial="Event/DateFromTo" arguments="{event : event}"/>
 
 	<div class="subscription">
-		<f:link.action action="new" class="button submit" controller="Subscriber" pageUid="{settings.pidSubscribeForm}"
+		<f:link.action action="new" class="button subscribe" controller="Subscriber" pageUid="{settings.pidSubscribeForm}"
 					   title="Anmelden bei {event.contact.name}" arguments="{event : event, category: category}">
 			<f:translate key="tx_slubevents_domain_model_event.subscribe"/>
 		</f:link.action>
diff --git a/Resources/Private/Partials/Event/GbItemKind1.html b/Resources/Private/Partials/Event/GbItemKind1.html
index fbcc6fc..87f7607 100644
--- a/Resources/Private/Partials/Event/GbItemKind1.html
+++ b/Resources/Private/Partials/Event/GbItemKind1.html
@@ -6,9 +6,9 @@
 	<div class="subscription">
 
     <f:form name="subscribe_{event.uid}" object="{subscriber}" pageUid="{settings.pidSubscribeForm}" action="new" controller="Subscriber" arguments="{event : event}">
-        <f:comment><f:form.select name="category" style="width:200px;" class="form-control" options="{event.categories}" /></f:comment>
+        <f:comment><f:form.select name="category" class="form-control" options="{event.categories}" /></f:comment>
 
-        <select style="width:200px;" class="form-control" id="sel_{event.uid}" name="tx_slubevents_eventsubscribe[category]" onchange="check_wiba({event.uid});">
+        <select class="form-control" id="sel_{event.uid}" name="tx_slubevents_eventsubscribe[category]" onchange="check_wiba({event.uid});">
             <option value="-1"><f:translate key="persSelectTopic" /></option>
             <f:for each="{event.categories}" as="cat" key="key" iteration="singleEventIterator">
                 <option value="{cat.uid}">{cat.title}</option>
@@ -16,14 +16,14 @@
         </select>
         <label style="display:none;" for="sel_{event.uid}" class="error" id="slub-forms-select-{event.uid}-error"><f:translate key="selecttopictobook"/></label>
 
-        <f:comment><f:form.submit class="button submit" value="{f:translate(key: 'tx_slubevents_domain_model_event.subscribe')}" style="margin-top:0px" /></f:comment>
+        <f:comment><f:form.submit class="button subscribe" value="{f:translate(key: 'tx_slubevents_domain_model_event.subscribe')}" style="margin-top:0px" /></f:comment>
         <a href="javascript:;" onclick="reg_wiba({event.uid});" class="button submit"><f:translate key="tx_slubevents_domain_model_event.subscribe"/></a>
     </f:form>
 
 
 
         <f:comment>
-        <f:link.action action="new" class="button submit" controller="Subscriber" pageUid="{settings.pidSubscribeForm}"
+        <f:link.action action="new" class="button subscribe" controller="Subscriber" pageUid="{settings.pidSubscribeForm}"
                        title="Anmelden bei {event.contact.name}" arguments="{event : event, category: category}">
             <f:translate key="tx_slubevents_domain_model_event.subscribe"/>
         </f:link.action>
@@ -31,4 +31,4 @@
 
 	</div>
 	<div class="clear"></div>
-</li>
\ No newline at end of file
+</li>
diff --git a/Resources/Private/Partials/Event/GbItemKind2.html b/Resources/Private/Partials/Event/GbItemKind2.html
index 7e26a02..4a2e490 100644
--- a/Resources/Private/Partials/Event/GbItemKind2.html
+++ b/Resources/Private/Partials/Event/GbItemKind2.html
@@ -4,11 +4,23 @@
 <li class="{f:if(condition: eventIterator.isEven, then: 'Even')} {f:if(condition: eventIterator.isOdd, then: 'Odd')} {f:if(condition: eventIterator.isFirst, then: 'First')} {f:if(condition: eventIterator.isLast, then: 'Last')}">
 	<f:render partial="Event/DateFromTo" arguments="{event : event}"/> - <f:link.action action="show" controller="Event" pluginName="Eventlist" title="{event.description -> f:format.stripTags()}" pageUid="{settings.pidDetails}" arguments="{event : event}">{event.title}</f:link.action>
     <div class="subscription">
-		<f:link.action action="new" class="button submit" controller="Subscriber" pageUid="{settings.pidSubscribeForm}"
-					   title="Anmelden bei {event.contact.name}" arguments="{event : event, category: category}">
-			<f:translate key="tx_slubevents_domain_model_event.subscribe"/>
-		</f:link.action>
-
+        <f:if condition="<se:condition.IsSubscriptionAllowed event='{event}' />">
+            <f:then>
+                <f:link.action action="new" class="button subscribe" controller="Subscriber" pageUid="{settings.pidSubscribeForm}"
+                title="Anmelden bei {event.contact.name}" arguments="{event : event, category: category}">
+                <f:translate key="tx_slubevents_domain_model_event.subscribe"/>
+            </f:link.action>
+            </f:then>
+            <f:else>
+                <f:if condition="{event.externalRegistration}">
+                    <f:then>
+                        <f:link.external uri="{event.externalRegistration}" class="button subscribe external" target="_blank">
+                            <f:translate key="tx_slubevents_domain_model_event.external_registration" />
+                        </f:link.external>
+                    </f:then>
+                </f:if>
+            </f:else>
+        </f:if>
 	</div>
 	<div class="clear"></div>
 </li>
diff --git a/Resources/Private/Templates/Category/ContactList.html b/Resources/Private/Templates/Category/ContactList.html
index a94c440..f5d981c 100644
--- a/Resources/Private/Templates/Category/ContactList.html
+++ b/Resources/Private/Templates/Category/ContactList.html
@@ -9,26 +9,22 @@
 	                <li class="heading"><h4><f:format.date date="<se:format.newMonthTitle events='{wibas}' index='{label}' />" format="%B %Y" /></h4></li>
 	            </f:then>
 	        </f:if>
-			<f:if condition="<se:condition.IsSubscriptionAllowed event='{wiba}' />">
-				<f:then>
-					<f:if condition="<se:format.freePlacesLeft event='{wiba}' /> >= 1">
-						<f:then>
-							<f:if condition="{kind} == 1">
-								<f:comment>Wissensbar</f:comment>
-								<f:render partial="Event/GbItemKind1" arguments="{event: wiba, category: category, eventIterator:wibaIterator}"/>
-							</f:if>
-							<f:if condition="{kind} == 2">
-								<f:comment>Veranstaltungen</f:comment>
-								<f:render partial="Event/GbItemKind2" arguments="{event: wiba, category: category, eventIterator:wibaIterator}"/>
-							</f:if>
-							<f:if condition="{kind} == 3">
-								<f:comment>Sprechstunden</f:comment>
-								<f:render partial="Event/GbItem" arguments="{event: wiba, category: category, eventIterator:wibaIterator}"/>
-							</f:if>
-						</f:then>
-					</f:if>
-				</f:then>
-			</f:if>
+            <f:if condition="{kind} == 1">
+                <f:comment>Wissensbar</f:comment>
+                <f:if condition="<se:condition.IsSubscriptionAllowed event='{wiba}' />">
+                    <f:render partial="Event/GbItemKind1" arguments="{event: wiba, category: category, eventIterator:wibaIterator}"/>
+                </f:if>
+            </f:if>
+            <f:if condition="{kind} == 2">
+                <f:comment>Veranstaltungen</f:comment>
+                <f:render partial="Event/GbItemKind2" arguments="{event: wiba, category: category, eventIterator:wibaIterator}"/>
+            </f:if>
+            <f:if condition="{kind} == 3">
+                <f:comment>Sprechstunden</f:comment>
+                <f:if condition="<se:condition.IsSubscriptionAllowed event='{wiba}' />">
+                    <f:render partial="Event/GbItem" arguments="{event: wiba, category: category, eventIterator:wibaIterator}"/>
+                </f:if>
+            </f:if>
 		</f:for>
 	</ul>
 
@@ -43,7 +39,6 @@
 			Bitte wählen Sie einen Ansprechpartner im Backend!
 		</f:then>
 		<f:else>
-
 			<div class="contacts">
 				<p><f:translate key="tx_slubevents.gb.i_consult_you" /></p>
 				<f:for each="{contacts}" as="contact">
@@ -65,7 +60,7 @@
 				<f:then>
 					<f:if condition="{wibas}">
 						<f:then>
-              <h3><f:translate key="tx_slubevents_domain_model_event.genius_bar" /></h3>
+                            <h3><f:translate key="tx_slubevents_domain_model_event.genius_bar" /></h3>
 							<f:if condition="{settings.hidePagination}">
 								<f:then>
 									<f:render section="wibaListing" arguments="{wibas: wibas, category: category, kind: 1}" />
@@ -92,7 +87,7 @@ <h3><f:translate key="tx_slubevents_domain_model_event.genius_bar" /></h3>
 									}
 								}
 							</script>
-              <br style="clear:both">
+                            <br style="clear:both">
 						</f:then>
 					</f:if>
 				</f:then>
@@ -103,7 +98,7 @@ <h3><f:translate key="tx_slubevents_domain_model_event.genius_bar" /></h3>
 				<f:then>
 					<f:if condition="{events}">
 						<f:then>
-              <h3><f:translate key="persEvents" /></h3>
+                            <h3><f:translate key="persEvents" /></h3>
 							<f:if condition="{settings.hidePagination}">
 								<f:then>
 									<f:render section="wibaListing" arguments="{wibas: events, category: category, kind: 2}" />
@@ -114,7 +109,7 @@ <h3><f:translate key="persEvents" /></h3>
 									</f:widget.paginate>
 								</f:else>
 							</f:if>
-              <br style="clear:both">
+                            <br style="clear:both">
 						</f:then>
 					</f:if>
 				</f:then>
@@ -125,7 +120,7 @@ <h3><f:translate key="persEvents" /></h3>
 				<f:then>
 					<f:if condition="{consultation}">
 						<f:then>
-              <h3><f:translate key="persConsultingHours" /></h3>
+                            <h3><f:translate key="persConsultingHours" /></h3>
 							<f:if condition="{settings.hidePagination}">
 								<f:then>
 									<f:render section="wibaListing" arguments="{wibas: consultation, category: category, kind: 3}" />
diff --git a/Resources/Private/Templates/Category/GbList.html b/Resources/Private/Templates/Category/GbList.html
index 12b3780..afea543 100644
--- a/Resources/Private/Templates/Category/GbList.html
+++ b/Resources/Private/Templates/Category/GbList.html
@@ -13,11 +13,7 @@
                 </f:if>
 				<f:if condition="<se:condition.IsSubscriptionAllowed event='{event}' />">
 					<f:then>
-						<f:if condition="<se:format.freePlacesLeft event='{event}' /> >= 1">
-							<f:then>
-								<f:render partial="Event/GbItem" arguments="{event: event, category: category, eventIterator:eventIterator}"/>
-							</f:then>
-						</f:if>
+                        <f:render partial="Event/GbItem" arguments="{event: event, category: category, eventIterator:eventIterator}"/>
 					</f:then>
 				</f:if>
 			</f:then>
diff --git a/Resources/Private/Templates/Event/Show.html b/Resources/Private/Templates/Event/Show.html
index 604e8ec..df5bb81 100644
--- a/Resources/Private/Templates/Event/Show.html
+++ b/Resources/Private/Templates/Event/Show.html
@@ -92,11 +92,13 @@ <h3>{event.title}</h3>
 
 				<div class="submit">
 					<f:link.action action="list" class="button linkback" pageUid="{settings.pidListing}">
-						<f:translate key="paginate_back" /></f:link.action>
+						<f:translate key="paginate_back" />
+                    </f:link.action>
 					<f:if condition="<se:condition.IsSubscriptionAllowed event='{event}' />">
 						<f:then>
 							<f:link.action action="new" class="button subscribe" controller="Subscriber" pageUid="{settings.pidSubscribeForm}" arguments="{event : event}">
-								<f:translate key="tx_slubevents_domain_model_event.subscribe" /></f:link.action>
+								<f:translate key="tx_slubevents_domain_model_event.subscribe" />
+                            </f:link.action>
 						</f:then>
 					</f:if>
 				</div>
diff --git a/Resources/Public/Css/slub-event-gb.css b/Resources/Public/Css/slub-event-gb.css
index 170c19a..c12f763 100755
--- a/Resources/Public/Css/slub-event-gb.css
+++ b/Resources/Public/Css/slub-event-gb.css
@@ -194,35 +194,40 @@
 	border-bottom: 0 transparent none;
 }
 
-.slub-category-list ul ul > li:hover, #leftcol .slub-category-list ul ul > li a:hover, #leftcol .slub-category-list ul ul > li:hover > a {
+.slub-category-list ul ul > li:hover,
+#content .slub-category-list ul ul > li a:hover,
+#content .slub-category-list ul ul > li:hover > a {
 	background: #09a;
 	color: #fff;
 }
 
-.slub-category-list ul ul > li.nooffer:hover, #leftcol .slub-category-list ul ul > li.nooffer a:hover, #leftcol .slub-category-list ul ul > li.nooffer:hover > a {
+.slub-category-list ul ul > li.nooffer:hover,
+#content .slub-category-list ul ul > li.nooffer a:hover,
+#content .slub-category-list ul ul > li.nooffer:hover > a {
 	background: transparent;
 	color: #999;
 	font-weight: normal;
 }
 
-#leftcol .slub-category-list ul {
+#content .slub-category-list ul {
 	list-style-image: none;
 	list-style-type: none;
 	margin: 0;
 	padding: 0;
 }
 
-#leftcol .slub-category-list .nooffer, #leftcol .slub-category-list .nooffer a {
+#content .slub-category-list .nooffer,
+#content .slub-category-list .nooffer a {
 	color: #999 !important;
 	font-weight: normal;
 	opacity: 1 !important;
 }
 
-#leftcol .slub-category-list ul ul > li > ul {
+#content .slub-category-list ul ul > li > ul {
 	font-size: 11px;
 }
 
-#leftcol .slub-category-list ul ul > li a {
+#content .slub-category-list ul ul > li a {
 	color: #078;
 	text-decoration: none;
 	font-weight: bold;
@@ -242,14 +247,14 @@
 	margin: 40px 0;
 }
 
-#leftcol .slub-event-gblist .contacts > p:first-child {
+.slub-event-gblist .contacts > p:first-child {
 	color: #999;
 	font-weight: 600;
 	margin: 0 55px 0 0;
 	float: right;
 }
 
-#leftcol .slub-event-gblist .contacts:before {
+.slub-event-gblist .contacts:before {
 	content: " ";
 	position: absolute;
 	right: 0;
@@ -287,24 +292,15 @@
 	display: block;
 }
 
-#leftcol .slub-event-gblist ul {
+.slub-event-gblist ul {
 	border: 1px dotted #ccc;
 	border-width: 1px 0;
-	padding: 10px 0;
+	padding: 10px 0 !important;
 	margin: 0;
 	list-style-image: none;
 	list-style-type: none;
 }
 
-#leftcol .slub-event-gblist ul h4 {
-	margin: 0;
-}
-
-#leftcol .slub-event-gblist ul li.heading {
-	border-bottom: 1px dotted #ccc;
-	padding-bottom: 10px;
-}
-
 .slub-event-gblist ul li {
 	padding: 6px;
 }
@@ -321,9 +317,9 @@
 	clear: both;
 }
 
-#leftcol ul.f3-widget-paginator {
+.slub-event-list ul.f3-widget-paginator,
+.slub-event-gblist ul.f3-widget-paginator {
 	position: relative;
-	display: inline-block;
 	float: right;
 	background: #eee;
 	padding: 3px;
@@ -331,11 +327,13 @@
 	margin: -5px 5px 0 0;
 }
 
-#leftcol ul.f3-widget-paginator:nth-of-type(1) {
+.slub-event-list ul.f3-widget-paginator:nth-of-type(1),
+.slub-event-gblist ul.f3-widget-paginator:nth-of-type(1) {
 	margin-top: 23px;
 }
 
-#leftcol ul.f3-widget-paginator li {
+.slub-event-list ul.f3-widget-paginator li,
+.slub-event-gblist ul.f3-widget-paginator li {
 	float: left;
 	margin: 0;
 	color: #666;
@@ -345,18 +343,21 @@
 	border-right: 1px dotted #ccc;
 }
 
-#leftcol ul.f3-widget-paginator li:last-child {
+.slub-event-list ul.f3-widget-paginator li:last-child,
+.slub-event-gblist ul.f3-widget-paginator li:last-child {
 	border-right: 0 none;
 }
 
-#leftcol ul.f3-widget-paginator li a {
+.slub-event-list ul.f3-widget-paginator li a,
+.slub-event-gblist ul.f3-widget-paginator li a {
 	text-decoration: none;
 	color: #078;
 	font-weight: normal;
 	padding: 0 3px;
 }
 
-#leftcol ul.f3-widget-paginator li a:hover {
+.slub-event-list ul.f3-widget-paginator li a:hover,
+.slub-event-gblist ul.f3-widget-paginator li a:hover {
 	color: #c00;
 }
 
@@ -382,4 +383,52 @@
 	background: #c3dde1;
 }
 
+
+.slub-event-gblist label {
+    display: block;
+    float: left;
+    width: 32%;
+    font-size: 14px;
+    clear: both;
+    margin: 5px 10px 0 0;
+}
+
+.slub-event-gblist label.error {
+    float: none;
+    padding: 10px;
+    line-height: 1.4;
+    color: white;
+    background: red;
+    position: absolute;
+    right: -200px;
+    width: 300px;
+    margin: 0;
+    z-index: 1;
+}
+
+.slub-event-gblist label.error:before {
+    position: absolute;
+    top: 50%;
+    margin-top: -5px;
+    left: -10px;
+    width: 0;
+    height: 0;
+    border: 5px solid;
+    border-color: transparent red transparent transparent;
+    content: "";
+}
+
+.slub-event-gblist select {
+    padding: 6px;
+    border: 1px solid;
+    display: block;
+    width: 200px;
+    max-width: 63%;
+    margin: 2px 10px 2px 0;
+    font-size: 13px;
+    float: left;
+    text-align: left;
+    background: white;
+}
+
 /* EOF */
diff --git a/composer.json b/composer.json
index 7795638..7b05b8c 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
   ],
   "license": "GPL-3.0-or-later",
   "require": {
-    "typo3/cms-core": "~9.5.24|~10.4.12"
+    "typo3/cms-core": "~9.5.31|~10.4.21"
   },
   "autoload": {
     "psr-4": {
diff --git a/ext_emconf.php b/ext_emconf.php
index ec03734..4a40712 100755
--- a/ext_emconf.php
+++ b/ext_emconf.php
@@ -22,10 +22,10 @@
     'state'            => 'stable',
     'uploadfolder'     => true,
     'createDirs'       => 'typo3temp/tx_slubevents/',
-    'version'          => '5.0.5',
+    'version'          => '5.1.0',
     'constraints'      => [
         'depends'   => [
-            'typo3'   => '9.5.28-10.4.99',
+            'typo3'   => '9.5.31-10.4.99',
         ],
         'conflicts' => [
         ],