WiFi dropping constantly since start of contract 2 months ago

[Sara1237]

My WiFi keeps dropping constantly and when it is working is very very very slow on mobile devices. 
when I test it, the tests always come back saying everything is working fine , but it definitely isn't? 

[Highlinder]

@Sara1237  Do you have a black or white router from Sky?

[Sara1237]

Hi it's the black router 

[Highlinder]

@Sara1237 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...