Email barishasdemir@gmail.com and include your device, iOS or Android version, and what you were doing when the problem happened. That is usually enough to reproduce it.
Open the Shop tab and tap Restore. Purchases are tied to the Apple or Google account that paid, so make sure you are signed in with the same one. If it still does not appear, email us with the date of purchase.
Email us from the address on your account and ask for deletion. Everything tied to the account is removed, normally within 30 days. This cannot be undone, and it includes your decks, cards and review history.
Hearts refill over time, one per hour up to five. You can also earn one by watching a rewarded ad, buy a pass for unlimited hearts for a period, or subscribe to Permana Pro, which removes the limit entirely.
What the app collects and why is set out in the Privacy Policy.