support
Write to support@dobreon.com. A person reads it.
it isn't counting
Put the phone flat on the floor where you can see the screen, and start from the top of a push-up. If the room is dim, switch the workout screen to light mode with the moon button — the screen is the only light pointing at your face down there, and face tracking needs some. If the banner says it is looking for your face, it has stopped counting and will resume by itself.
it counted the wrong number
Half repetitions are ignored on purpose. Very fast ones can be too — the counter refuses anything quicker than a person can actually move. You can add a missed rep with the + button while paused.
which iPhones work
Every iPhone that runs iOS 18 and has a front camera with face tracking. If yours cannot, push day says so during setup rather than selling you a subscription for it.
managing your subscription
Settings → your name → Subscriptions, on your device. Deleting the app does not cancel a subscription.