Sonos Move/Advice on UK Wifi Routers

Hi, I wonder if you can help.

I’ve got a system comprising of 2 moves, an older Play 5, two Play 3s and a Play 1.

Now I get quite a few skipping and buffering issues at the back of the house farthest from the Wifi router, that’s mainly where I use the indoor move (and wanted to use it in the garden as well).  I’ve also got a smart TV at the back of the house which I don’t get issues with actually.

Sonos have advised me that the move needs to be 25-30 feet from the access point to give decent coverage and can’t connect to a range extender (which means I can’t actually use it wifi connected in the Garden).

I’ve been along investor in sonos and love the products, but this feels like a proper limitation (and I understand it needs to connect to the primary Wifi SID and NOT use the Sonos net, so I’m guessing that also rules out a boost. 

 Does anyone else have such an issue - or can you suggest perhaps a Wifi router that works in the UK with a great (longer) range which is approved by Sonos ?

Sorry to forum-ise but I’ve not really been getting full steer from Sonos support so far.

Thanks in advance,

Steve