Write to hello@mopple.app. We answer in English, Slovak, Czech and German, usually within a day.
Everything lives on your device. Export a CSV or a full JSON backup in Me → Data; the same screen restores a backup or deletes all data.
Use Me → Plan → Restore purchases after reinstalling or switching phones. Refunds are handled by Apple or Google through your store account.
Check that notifications are allowed for Mopple in system settings and that quiet hours in Me → Reminders don't cover the time you expect.