Is this the port on the side of the phone or the one below? And is this an active or passive dongle?
By that I mean that there are dongles that are simply pass through, they have a USBC on one side and a 3.5mm jack on the other. The active dongles have a DAC chip on the USB side to convert the digital signals into analog ones for the headphones.
And the reason this is important is that most phones need an active dongle to get sound out of the USB port. Many phones like pixels or samsungs will give you a notification saying they detected an analog audio device and don't support them or an unrecognized device.
Other phones like Xiaomi and Oneplus actually push an analog audio signal out of the USB port, so you can use either dongle, an active one with chip or a passive one to save battery.
I don't have an ROG8 on hand but my guess is that neither of the two ports has the analog audio option since the phone actually has an actual 3.5mm audio jack. And if you are plugging in a passive dongle from Sony or oneplus, the phone will not recognize the device.
But if it is a dongle with a DAC chip and the phone doesn't recognize it, then it is a software problem and someone here should contact development to fix it.
