How to get "Collaborate" tab Authorization??

[ojohnny]

Trying to create a Google Doc to use on the Collaborate tab.  Before I can create or access Google account I must first log-in to Google account though an Authorize page in Canvas.  I log-in to Google and hit "allow" button so Canvas can access my Google account, then I click on "Authorize" button on bottom of Canvas page and it replies:

"Authorization failed. Please click "Authorize" to try again."

I try this several times with same response.  What's the deal