Add-On GoogleCalender : "Authorisation is required to perform that action."

[DennisKa]

Hello 

trying to set up the account in an installed GTM Add-On for GoogleCalender results in 

Google Apps Script 
      Authorisation is required to perform that action.

re-Installed the addon , logged out from all other accounts..

I can install the AddOn , but cannot set it up..

Regards

Denis

[AshC]

@DennisKa  When you install the GoToMeeting Google Cal app from the G Suite Marketplace it should look something like this:

https://support.goto.com/meeting/help/gotomeeting-for-google-calendar-g2m090088

There is also the Chrome app that you might consider trying.