Email support@ascert.app. Mention the app version from the About screen (Stats → About) and you'll usually get sorted in one reply.
Use the Report a question link inside the app, and it'll fill in the question ID for you. Every report gets reviewed against the official exam objectives and study guides.
Purchases follow your Apple ID. On a new phone, tap Restore Purchases on the unlock screen. If nothing shows up, double-check you're signed into the same Apple ID that made the purchase and try again. Still stuck? Email support@ascert.app.
The question banks are written for the exam versions listed in the app and on this site — CCNA 200-301, A+ 220-1201/220-1202, Network+ N10-009, Security+ SY0-701. Check those codes against the exam you're booking before you buy.
Apple handles all App Store refunds — they can't be issued from this side. Request one at reportaproblem.apple.com.
Everything lives on your phone, so deleting the app deletes your progress with it. There's no account or cloud backup to restore from — don't uninstall mid-study.