Once upon an iOS time, if an app had a problem, just delete it, reinstall, and things were fine again. Not as much lately. Case in point: installed an app. Opened it, and selected to restore an in-app purchase. Got restoring purchase spinner, but app hung at that. After about 5 minutes of waiting I forced quit the app. When I tried to reopen it, it immediately crashed. Deleted app and reinstalled. When opening app, it still immediately crashed every time. Deleted app, rebooted phone, reinstalled, crash every time when opening app. Deleted app, rebooted phone, installed previous version of app. No luck, crash every time at opening. No idea what to even try next. iOS used to be a bit more resilient, no?