Please check if Authorize URL has this configuration:
https://accounts.google.com/o/oauth2/v2/auth?access_type=offline
access_type=offline is needed to get a refresh token from Google Analytics REST API. However, if this parameter was missing in the Authorize URL you would like to update the setting and then delete the application in https://myaccount.google.com/permissions. Once the application is deleted you can go back to eazyBI and run an import with the new settings.
Daina / support@eazybi.com