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Hi Michael, I see that you posted this question around mid-morning (our time). During that time, we were experiencing some problems with new authentications to Google Analytics and Google+ accounts. I posted some additional information in this Moz Community thread, but the short version is the issue should now be resolved, so you may wish to give it another try. If you're still having trouble authenticating to GA or G+, I encourage you to contact our Help team for further assistance. Cheers!