Hearing aid app

I’ve just tried setting up the myPhonak app (from Aurora store) on my C2.

The install is stuck in a loop where it asks to allow it to turn on Bluetooth - (which is turned on in Settings already). If I tap Allow, it says “Turning on Bluetooth” for 10s before returning to the “Pair hearing aids” screen.

I’ve tried installing the same app on a Samsung phone, and it works perfectly, so this is a C2 / Sailfish issue.

Anybody have any idea what’s causing this?