Problems with Sky Max broadband

[Todd6]

upgraded to sky max a few days ago and I can't connect my tvs to the Wi-Fi and has now decided not to work on the PlayStation 5, it connected yesterday but wouldn't work properly when gaming though. When watching something it it's cut out or just keeps reloading. I have reset the box Several times and nothing I have done has helped, wondering whether it's better to cancel and downgrade to get a booster.