Update contact.md

contact.md

@@ -11,4 +11,19 @@ Heisenbergstraße 2<br />
 48149 Münster<br />
 Germany<br />
 
+::: note
+The email address below is meant for general topics around the openEO project, openEO PSC, openEO API specification, or openEO process specification.
+The email address below is **NOT** meant for technical support regarding specific service providers or client implementations.
+
+- If you need help with specific service providers (e.g. openEO Platform or CDSE), please use their support channels.
+  - [openEO Platform Support Forum](https://forums.openeo.cloud)
+  - [Copernicus Dataspace Ecosystem Support](https://helpcenter.dataspace.copernicus.eu/hc/en-gb/community/topics)
+- If you need help with specific clients, please use the corresponding GitHub issue trackers:
+  - [Python client](https://github.com/Open-EO/openeo-python-client/issues)
+  - [R Client](https://github.com/Open-EO/openeo-r-client/issues)
+  - [Javascript Client](https://github.com/Open-EO/openeo-js-client/issues)
+  - [Web Editor](https://github.com/Open-EO/openeo-web-editor/issues)
+- If you have general questions or want to get in touch with the community, we recommend to join the chat (see below) and/or [join the monthly community calls](news/2022-07-07-monthly-dev-calls.md).
+:::
+
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