You cannot install Ubuntu Touch on a device that it has not been ported to. That's why the installer will not recognize your device. If you would like to port Ubuntu Touch to your device (porting is not the same as installing), please see the documentation.

I had same audio issue with my Pro5 also. I think it's just another POS from china. Some phones are ok and some not. My problem occurred in Android and UT/UB

@giemme Im currently using Sailbook and facebook live does not work. Nor do I get notifications.

I have tried using the UBinstaller and for me on my OnePlus One it did not work at all. I have also tried using the mdt with slightly more success. So the only thing that has worked for me is to install UBPorts via the server image. Two lines in your terminal window and then leave it to do its magic.