Bad WiFi connection around the house since new hub installed

[CH72]

So we had a new hub a few months back but now we have really bad connection re the WiFi upstairs , the printer won't connect via Bluetooth everything just doesn't like the new hub and we now can't seem to use our devices upstairs re tablets / phones etc . 

[jamesn123]

@CH72 

Sounds like you may need a booster, Sky provide these free if you have the Broadband boost or WiFi max addon