Hi @Mark_Hyland,
Looking at the Questyle webpage, I see the following:
PC OS Requirements：Win XP,Vista,Win7,Win8,Win10 and Mac OS
It looks like Linux might not be supported by this device, which is likely why you’re seeing issues. You might want to try playing to the device while it is connected to a Windows or Mac remote and see if that works for you.
I’d also recommend reaching out to the manufacturer about Linux support.
Thanks!