HELP: after upgrading to em Client 7.1, it's hanging in synchronization, can't receive new emails

It gives the following errors:

  1. Synchronizing folder list failed due to the following error: An access token must be provided to use GOAuthRequestFactory()
    2 [IMAP] An attempt to connect to [email protected] failed. This could be caused by temporary server unavailability or incorrect settings. Do you want to check the settings?

I have the same issue nothing I do fixes it. Trying to get VIP support with little success. This has been going on for 3 weeks now. Just installed Mailbird which works fine.