We're only other customers here I'm afraid, you'll need to phone or chat with Sky directly. Either 150 on a Sky broadband landline or Sky mobile or have a look at https://www.sky.com/help/articles/contacting-sky
Firstly, unplug the hub for 10 minutes and then reboot, hopefully a channel rescan will find a less congested wifi channel.
Have a look at the following to see if they can resolve your problem easily if no success with the above, you can also use the MySky app. If not you may need to consider either the Sky WiFi Max add-on package or perhaps purchasing a 3rd party mesh system (which remains yours regardless of ISP used and would be my own personal choice).
To check on local outages.
https://www.sky.com/servicechecker
To run the local checker.
https://www.sky.com/help/articles/broadband-diagnostic-start (do run all tests)
Helpful articles that explain the basics.
https://www.sky.com/help/articles/broadband-speeds-explained
https://www.sky.com/help/articles/broadband-tips-when-working-from-home
Link for Sky WiFi Max
https://www.sky.com/broadband/wifi-max
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Not a Sky employee
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Sky Q with 2GB UHD box wired to the Sky Max router
Samsung S95C TV, HDMI to Sonos Beam Gen 2
Sky FTTP 500Mb to Max Hub
Pair of TP-Link Deco BE65's in AP mode used for main WiFi access, main Deco hardwired to Max hub
