Authorizing Google Drive within Canvas

Hello,

Some of my lectures within Canvas require me to authorize the login to my Google Drive account.  When I click on my school account and choose allow, I am sent back to Canvas with the message "Authorization failed.  Please click authorize to try again".  I do have a MAC and I have gone through all my privacy settings to make sure nothing there is preventing me (that I can tell anyway).  I set up the 2 way authentication on Google as an extra precaution as it suggestion for users with MAC's.  I have never had this issue in the past authorizing Google Drive within Canvas for classes, so I wasn't sure if it was something I was doing or not.

Thanks in advance for any help,

Monica Stas