Calendar invites don't send from the app?

So @Delanthear you realise that this is a user forum. If, as a customer, you want to contact support you should use Contact Us.

I think it is possible that this mismatch could happen if the Google “Web Calendar Management Account” could get added to your phone as a local calendar.

How could this happen?

The Google “Web Calendar Management Account” is unknown to me also what was the secret link method.

  1. We could explore the above.
  2. Advanced fix, only if you understand the logic of this suggestion.

I guess you would have to be sure where all your actual data is. You would need to be fairly certain that the Workspace account accurately reflects your data so far

and that you have some awareness of the eDrive sync mechanism

then you could consider Reset the Calendar storage on phone.

Settings > Apps > All apps > Calendar > Storage and cache > Clear storage.

I would be inclined to do this with the phone fully offline and without changing anything in Settings > Accounts during the fix.

Check the calendar on the phone to check for “empty”. Now put the phone online, and preferably wait a while so that you do not react to something which is just a delay in the sync process.

Please do not mess with your Murena account at the same time.