Email: ugurgulay@gmail.com. Please include your phone model, Android version and a short description of what happened.
Open the Store in the game and tap Restore purchases, signed in to the same Google account that made the purchase. Pearl packs and Reef Pass Premium are used up when delivered and are not restored.
Tap Manage subscription in the Store, or open Google Play → Payments & subscriptions → Subscriptions. You keep the benefits until the end of the period you paid for. A free trial cancelled before it ends costs nothing.
Refunds are handled by Google Play: request a refund.
A fish that is neglected for several days can swim off to the Great Coral Reef. For a whole day afterwards a free Second Chance can bring it back. Set your sleep hours in Settings so the tank rests while you do, or turn on Vacation Mode when you will be away.
AquaCozy saves your tank on your phone. Uninstalling, clearing the app's storage or moving to a new phone without restoring the app's data starts a new tank; purchases can be restored as above.
Check Settings → Notifications in the game and the app's notification permission in Android's settings. Some phones also stop apps from running in the background; allow AquaCozy to run in the background (on Xiaomi phones, enable Autostart).
Settings → Ad privacy choices (shown where consent is required).
Settings → Your data → Delete my data. See the Privacy Policy for what else you can do.