Is there a reason why we can't change back to the old hub as now on fibre
If your old hub is a Hub 5 or later, then no reason at all. If it is a Hub4 or earlier, it won't work with fibre.
He called it a WI Fi router is that the same thing?
No, that is what the hub is, not sure what the intention is. If it is to replace the wifi adaptor on your laptop, you just need a dongle.
Did you enable those options in message 31?
You may need to reboot for them to take affect.
Thanks for everyone's help but we solved in the end by using a wireless USB adaptor an Archer T4U, apparently the broadband changes over on the 19th May not the 1st as originally suggested so hoping that won't cause any more problems..