Getting Kodi to work - UK

[ffoiled]

I've got Kodi installed on a Pi3B running Bullseye, and whilst I can start it up, that seems to be about all I can do with it.

I've currently got the Pi connected to a monitor, but in due course, I'll plug it into my TV. I can access Kodi using Firefox from another computer.

I've tried a couple of different things, firstly setting up the weather service. I've select the Met Office, but that doesn't seem to give me any weather, and if I try to change it away from the default of London, I get a 403 error from a Met Office server.

Turning to TV/Radio streaming, I've selected the PVR, but all I get is "PVR manager is starting up: 0%" on the monitor and a revolving circle with "just a sec" in the browser, which never changes. It appears to have pre-configured "Tvheadend HTSP Client", but according to the event log, the server is unreachable. Is this the right client for the UK, and how do I change it if not.

TIA

Adrian