New user problems

I have recently purchased a Skoda Karoq 2021 registration which I have had problems concerning registering a new user. There were no previous registered users only a guest. 

I had not had any problems whilst using the guest option.

I was a computer technician so I am capable of setting up this sort of device.

I registered as a new user including setup of the app on my Android phone. Initially I was unable to get the new username to load and despite multiple attempts I left it at that.

Recently the screen greeted me with my name and allowed me to login and become a primary user.

This is when my problems started, the infotainment unit seemed to have reset to default and everything had reverted to kilometers and litres etc.

I reset everything to miles end gallons etc and all seemed ok.

During a drive using Android auto and Google maps the infotainment system kept saying the Mobile phone had disconnected despite being wired into the USB  C socket.

The second problem was that the central locking key fob seemed to stop working eventually diagnosed as being very limited range. Installed new batteries in both key fobs etc. I had to stand really close to the front car door for it to work.

I was baffled and as a last resort logged out of my username and logged back in using the guest account and the key fob range returned back to normal.

Any suggestions would be appreciated.