@ian Exactly the same problem on VPX as you have described.
I was never successful re-installing UT with UBports installer (0.9.5 beta) on Fedora 33.

@Ian Yes, the same issues and more on VPX:
BT couldn't turn off. After commands, as suggested at:
https://github.com/HelloVolla/ubuntu-touch-beta-tests/issues/119
sudo service bluetooth stop
BT stopped. But I can't get it back with
sudo service bluetooth start followed by "power down the phone and turn it back on again."
WiFI off switch disappear. Temporary workaround I found is to use Hotspot - it automatically switches on the WiFi, and the switch is once again visible.
No longer access to the phone from the linux box: "Unable to open MTP device: xxx,yyy, but adb devices -l shows:
device usb:5-2 product:lineage_yggdrasilx model:Volla_Phone_X device:yggdrasilx transport_id:4
Tried to switch to rc channel, every time download failed.
So, I ended with the 1/4 brick device. Still can call or receive phone call, but no BT for keyboard / mouse, WiFi works or not, Flight Mode deactivates sim cards only - I have to switch device off, instead of reading book during boring flights.