iPad system sounds come through headphones but not music or app sounds
Kind of a weird problem: I'm using OneOdio wired headphones plugged into a power through USB C 3.5mm headphone jack dongle (maker is s'touch). This used to work just fine but sound just suddenly stopped coming through the headphones while I was playing with GarageBand. Weirdly, system sounds still come through just fine, but music, GarageBand and other app sounds do not. The little blue indicator does come on when I plug the dongle in, and I can hear a pop in the headphones when plugged and unplugged (it is distinctly the 'headphones engaged' sound, not the 'I bopped the wire' sound). Bluetooth headphones do work (for reasons of delay, using bluetooth headphones all the time is not an option).Things I've tried:
Quitting and restarting all apps
Restarting the iPad
Switching mute on and off
Switching airplane mode on and off
Flipping the dongle the other way up
Cleaning the dongle
Cleaning the iPad's USBC port
Cleaning the 3.5 mm headphone jack and plug
Plugging in a different set of 3.5mm headphones
None of this has had any effect.
The headphones do work when plugged into other things; they're fine, but I did check with two other sets of headphones (an older gaming headset and some Apple wired headphones). Since system sounds are still coming through I suspect the dongle is okay, but unfortunately my iPad is the only device in the house that uses USBC so I can't check it with another device. Anyone have any ideas? I'm stumped here!
Thanks for your attention-- I appreciate it.
iPad Air