Rated 1 out of 5 stars

Despite the pleas to post questions and requests for help to the forum, I've only heard crickets there. The FAQ doesn't offer much troubleshooting help, either. It looks like a well-polished add-on, but it seems it just plain doesn't work, at least for me, for some reason. I'll happily change this review if I get any helpful assistance.

This review is for a previous version of the add-on (2.0.9). 

I believe this has been resolved in the release channel since early January, and in 2.0.10 since mid February based on feedback from others in the forum. In all cases that I've looked into a different e-mail address was used in the account wizard than what was used to authenticate, causing Google to reject the token when used with the wrong e-mail address.

You waited 4 days for a response during the holiday season, which I'd consider very reasonable for a free product. I've been waiting well over a month so far to hear back from you on whether it worked, however... ;)