Email support@perufitlife.com and a human replies. Usually within a day.
Yes, and you should. On the log screen, pick the day before you tap save — it goes back a week at a time, and you can keep going. Your cycle fills in behind you.
Open it from History and change the date. Everything that depends on it recalculates.
Log both. The app asks once whether a second shot within half an hour is deliberate, and after that it stays out of your way.
After a few complete cycles. Before that it says so plainly rather than guessing — two or three data points are a coincidence, not a pattern, and an app that names a pattern too early is worse than one that waits.
Yes. Every field on the shareable card has its own switch, and your actual weight is off by default. The shape of the line still tells the story.
On your phone, and only there. See the privacy policy.
Through Apple: Settings, then your name, then Subscriptions. We cannot cancel it for you, and we cannot see your payment details.
Email support@perufitlife.com with what happened and what you expected. If you can say which screen, that usually settles it in one reply.