Reset sky wifi now won’t connect to a box

[Tomipswich]

Previously had Sky broadband unmeshed for a couple of "smart" devices. I've now reset the router so I have a meshed signal and the Q box now doesn't want to know. It recognises the network but won't connect via wps or password. Tv, phones etc all working fine. Ethernet not an option as these devices have to be in different rooms. I've hard reset the router and trying powering off and on and done a factory settings reset on the Q box. Any ideas appreciated; although ideally ones that don't have me off out to the shops as had no connectivity issues before. 

[jamesn123]

@Tomipswich 

What does it say when you select broadband from another provider and connect manually?