Broadband stops working

[KarenB123]

Good morning, my broadband started playing up a week ago, kept going offline.

Sky said it was my router and sent a new one. I had a local engineer fit it for me and it worked perfectly to start with.

but now the same problem again.  When I do a speedtest it will say cannot connect, then 5 minutes later perfect again.

what could my issue be? 

[Highlinder]

@KarenB123 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...