I had to factory reset my phone.vWhen I reinstalled dogfight I lost my rankvand all the planes i bought.vHow do i get them back??? Or am I screwed?!

Buy the upgrade again, the money will never actually leave your account. Itll say you already bought it. Sign in with your email and password. It doesnt delete your stuff, i delete the app and reinstall whenever theres a significant problem. Helps sometimes.