Appointments + Update, Can't Sync Google Calendar

I updated to the new Appointments + Version, and it said that I had to redo the calendar. No big deal. Followed the instructions, copied the new codes in, and hit next. Now it’s asking me for an access code. When I click on the access code link, Google gives me a 401 error, saying Invalid Client. I can’t find a way to go back and redo the Appointments + Calendar settings either, to make sure it was copied in correctly.

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