I have a PIXEL 9 and am trying to use Thunderbird For Android and failing to get it working.

Hi Rob A. Check the app is successfully connecting to your email providers server. # Navigate to settings > account name > fetching mail > incoming server # Click next Does your account connect successfully or report an error? B. Is the issue only with automatic sync? Do emails download when you press the sync account button? C. Have you allowed the app to run in the background and excluded from battery optimisations in Android's settings. D. Have you changed any settings on the fetching mail page. E. Can you successfully send emails from the app? F. Have you taken any steps to troubleshoot the issue, such as reinstalling and using default settings?