Support
In the app, go to Settings → Write to us to send a message. If you can't reach the app: erengn@gmail.com
How do I cancel?
On your iPhone: Settings → your name → Subscriptions → Purrpose. In the app, My plan → Manage subscription goes to the same place.
I changed phones and my subscription is missing
Tap My plan → Restore purchases while signed in with the same Apple Account.
Do my logs move to a new phone?
Your logs live only on your phone. Restoring your new iPhone from a backup of the old one brings them along.