Wifi signal keeps dropping

[Kimbo12]

I have superfast broadband but since upgrading to superfast my wifi keeps dropping and virtually impossible to get signal upstairs. Its really not fit for purpose. I have been checking signal strength via app and broadband checker can sit at 65mb/s then drop to 20mb/s few mins later or says everything good and then few mins later says there is a problem and to contact sky with error. I definitely think i require a booster box. Look forward to hearing from you tia

[jamesn123]

@Kimbo12 

I would note that Sky are not obliged to ensure the WiFi works in every part of your house. If you have the broadband boost or WiFi max addons they will provide boosters to you to try and solve it but nothing is guaranteed