Write to hello@alexbut.com. We read every message and usually reply within two working days. Please don't include your journal entries in emails.

Quiet Journal is not a medical or crisis service. If you are in danger or thinking about harming yourself, call your local emergency number now, or find a free, confidential helpline in your country at findahelpline.com. The app also shows helplines in Settings → Support.
On your iPhone. With Pro you can turn on iCloud sync, which keeps a copy in your own private iCloud. We can't read either.
A letter needs at least three days kept that week. Letters are written by Apple's language model on your iPhone, so Apple Intelligence must be turned on in Settings → Apple Intelligence & Siri. Without it you get a simple summary of your week instead.
Open the Pro screen and tap Restore, using the same Apple Account you bought Pro with. To bring your entries along, turn on iCloud sync before you switch phones, or use Settings → Export.
Open Settings → your name → Subscriptions → Quiet Journal and tap Cancel Subscription, at least 24 hours before the renewal date. Deleting the app does not cancel it. Your entries stay yours either way.
Payments are handled by Apple. Request a refund at reportaproblem.apple.com.
Open Weeks, tap the empty day and add its colour and line. There are no streaks to lose.