can´t retrieve google calendars

[bonny547s]

I am still configuring ogcs. Have done this in the past succesfully, but it´s failing now.

The field "connected Account" in the settings tab to enter a google calendar is not editable. However, if I klick on "Retrieve Calendars" the correct google account is shown in the "Connected Account" box.
Immediately after the error message "Failed to retrieve Google calendars. Please check the output on the Sync tab for more details" pops up.

The Sync Tab sais: "
Unable to get the list of Google calendars. The following error occurred:
Request had insufficient authentication scopes. [403=Forbidden]"

A second error message that sais "You need to select a Google Calendar first on the Settings tab" keeps popping up repeatedly.

I remember from the first (successful) installation, being prompted for some ogcs confirmation when trying to log in to my google account right after having installed ogcs. I am not prompted for this anymore.
I have uninstalled and reinstalled ogcs, but no success.

Attached are the logs.
OGcalsync.log

Thanks for any help!

[PMFlorida]

Has this been answered?? I can't get my google calendar to sync even if I have added it. I would be more than happy to donate if I could just get this fixed please!