Being able to download attachments would be a start. Currently worse than useless. Fix the Android issue ASAP.
Back to basics, sending and receiving attachments is as basic as it gets?
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Sorry to hear that you are having a bit of trouble with the App. To resolve this, please try the troubleshooting solutions below: 1. Clear the app's cache 2. If you're signed in, tap the Settings icon, tap Manage Accounts, then tap Edit, tap Remove 3. Restart your mobile device 4. Uninstall and reinstall the app with the latest version 5. Lastly, switch the internet connection from WiFi to mobile data