You could try setting your mobile phone up as a wifi hotspot and see if you can connect through that
See message 4 and 5
The OP said he tried logging onto his works guest network so I don't understand why you said "that was never going to work". Is the purpose of works guest networks not to allow non domain computers to connect?
same problem,same attempted solutions
have spilt 3g/5g, powerwashed and reset , powerwashed chrome books..deleted all downloads,..yet still these dont connect other lap tops connect tohe hub....
only thing that worked for me was to reset the BT hub.
which involved pressign a button on the back of the hub....switching on and ff dorsnt work.
i now have to do this every month or two
takes 5 minutes