Hi @Peter20066 you don't mention if this is during initial setup or you have simply lost the WiFi connedction.
If the latter then you should just be able to connect by going to Settings . Network > Network Connection. Move right to Status and then right again to reset. Here you will enter your router SSID and password.
Hope fully if you follow that procedure you will connect to the internet.
If the problem is during setup the following link might help: https://www.sky.com/help/articles/setting-up-sky-glass-help
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