Google OAuth login

I generated an OAuth Client ID via the Google Developers Console and entered the ID and secret key in the Google Calendar settings module. The redirect URL defaulted to https://fatbodypeace.com/wp-admin/admin-ajax.php?action=googleoauth-callback

However, I’m not able to select the desired calendar. The settings module indicates I must be logged in with Google OAuth. Screenshots are available here and here.

The page I need help with: [log in to see the link]