Hello @H-c
Welcome to the Sky Community, we are all just customers like yourself and have no direct link into Sky Custoemr service itself.
You don't mention if anything in your setup has changed recently, nor what router, service, etc. you pay for so here are some general suggestions.
A single router often fails to reach every room in a property, even reatively small ones. If you have a weak wifi in some rooms here are some options that would help:-
1. Obtain wifi boosters from Sky (but that may or may not cost you depending on what level of broadband service you are paying for). There are many posts on this forum about obtaining these if you search for "Booster".
2. Invest in further hardware and create your own wifi Mesh with sufficient devices to cover the whole house. There are multiple suppliers you can pick from that all work well, but this can be relatively costly (however once invested, a Mesh system would work with any broadband supplier if you eventually move away from Sky).
3. Homeplugs/Powerline devices can provide a hardwired solution from your Sky Broadband router to other rooms using your mains wiring, you simply need a power socket near the router and another in the "target" room that then allows devices to be hardwired (or connection of a wifi hotspot in the target room).
Personally I went with option 2 as some rooms in our bungalow were just too far away from the router to pick up a wifi signal reliably. This also made wifi available on our patio which is a bonus in the summer months.
There are plenty of very knowledgeable people on here that can offer advice / help in much more detail.
Good luck !
