Cannot connect

[NinaAttfield]

Hi, I cannot connect the sky box to the router. 
it stopped working 3 days ago and I have done everything that has been suggested. Can someone please help. The sky box disconnected itself and I cannot get it to reconnect, even though all my green lights are on and the sky channels are working. 

The internet is really slow 

[Highlinder]

@NinaAttfield Could you please post your router stats following the link below.
https://helpforum.sky.com/t5/Broadband/How-to-find-your-Sky-Broadband-router-stats/td-p/2855717#M101...