Why wont my tcp smart wifi socket connect to my wifi. (Smart hub 2)
Welcome to this user forum.
Try turning off Smart Setup.
http://bt.custhelp.com/app/answers/detail/a_id/44328/~/switching-smart-setup-on-and-off-on-the-bt-ho
If that still does not help, then change the wireless mode.
https://www.bt.com/help/broadband/what-is-the-wireless-mode-feature-on-my-bt-smart-hub-
Try mode 2 or 3.