I have a few custom ringtones that I have purchased from iTunes to use for reminders, calendar events, and text messages. The first two days on iOS 12 they all worked properly. Yesterday, they all stopped working and instead my phone is using the default alert tone system-wide. My settings haven't changed, I still have the custom ringtones checked for each app where I was using them. I tried resetting my phone (long press on power button), and soft resetting (long press on power and volume button) and neither has fixed the problem. Any ideas? I don't know what else to try at this point to get my ringtones back. Thanks!