Some integrations, such as the Teams meeting scheduler and FlipGrid App may seem to get "stuck" with blank screens and no noticeable error message or problem.
One cause of this problem is blocking of third party cookies.
To fix in Chrome, go to chrome://settings/content/cookies
This setting should be off (as shown above). If it is on, please turn it off.
Close all open browsers and re-open. You may need to log out and back in.