Known mobile app issues are listed in the Troubleshooting section of the Fastmail mobile app help page.
Android users can troubleshoot most issues with Fastmail's mobile app by clearing your data and reinstalling the app.
The steps will vary from device to device, and should be something like this:
- Go to your phone's Settings, and tap Apps (or App Management).
- Select the Fastmail App.
- Now select Storage/Data.
- Choose Clear Data if available, or Clear Cache. If you see both of these options, please clear both.
If you continue to have problems and you’ve already cleared the app data/cache, please uninstall the Fastmail app, restart your device, and download the Fastmail app again.
For additional assistance, please contact Support.