Hi @Paul Grant ,
Welcome to the Q&A forum! Please don't worry, let's see how to solve the problem.
There are many reasons for this situation:
- SharePoint application problem. Please try to log in to SharePoint with a mobile browser to see if this situation still occurs. Or uninstall and reinstall the application.
- Mobile system version problem. This situation may also occur because the mobile system version is incompatible with the application.
Currently, the Q&A forum has limited support for SharePoint mobile applications because it cannot be tested. If the problem persists, it is recommended that you follow the forum entrance for the corresponding mobile operating system provided in the following article to seek more professional help.
Thank you for your support and understanding.
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