Square router network is suddenly invisible to some devices

[CrossChannel]

Last month, some - but not all - of my devices suddenly stopped being able to see my network on our square THG3000 router. They don't list my SSID network name as a choice for joining, but their Wi-Fi seems to be working perfectly as they can all still recognise my neighbours' networks, or join a mobile hotspot, etc.

This is intermittent: on some days all is fine and every device in the house can see my network. But on others, the same few devices can't see our network. This changes without me doing anything (for example, I haven't restarted, reset, re-programmed, and so on). Today, the devices can't detect the network.

If I plug in an older Vodafone router (an HHG2500 set to the same SSID and password) all my devices can see and join the network consistently, every day.

I see that it's no longer possible to change channel numbers via the app or router UI (as detailed here https://forum.vodafone.co.uk/t5/Other-broadband-queries/Wireless-channel-selection-missing-in-expert...), but I suspect that this is possibly something to do with the issue. I've spoken to Vodafone's tech team and received some confusing advice which hasn't fixed the problem.

Any ideas? I'd really like to use the THG3000 as its coverage seems better than the older HHG2500.

[Nemain_79]

Thanks Jayach, probably me not explaining myself properly!  

I've given up with trying to change channel - am still attempting to d/l that old app, no luck so far - phone or PC.

I checked your post earlier and could see that I'm on Channel 13.

I've got a Dell 1397 Mini Card - other people have suggested changing from Antenna to Aux -  Bur can't see an option for that.

Have attempted to  change to Channel 13 under hopefully the right bit.  Still no joy.  I've attached a photo, fingers crossed!

[Nemain_79]

I was unable to d/l the APK file for the older version of the app - for whatever reason.  Someone else posted this on a different thread and it has worked!  It automatically uninstalled my newer app and installed the older app - and kept details (names of all devices connected etc.) I was able to change the channel.  Hallelujah!  Have posted here in case it's help to any one else..

Also, as an earlier post 

https://vodafone-broadband.en.aptoide.com/app

Download & install,  go to wifi, advanced settings, page down to change channel.

You may need to select 2.4 or 5 Ghz on wifi page (mine is split)

Switch updates for the app to off or google will update automatically,  has worked for me for a while.

[Jayach]

Congratulations on resolving your problem.

I don't think you can change the channel in the wireless card driver, It should pick up it's location from the operating system and be able to use whatever is allowable for that region. If you are using Windows 10 just make sure it is set to UK.

Also a different driver may also cure it.

Of course now you have been able to change the channel it's no longer important.

[ashghinn]

I found this thread after tearing my hair out trying to figure out why my router had become permanently invisible to my desktop but worked fine for our phones. 
@CrossChannelthanks - particularly for your follow-up message. Did as you said, changed my adaptor from 1-11 to 1-13 and BING! my SSID immediately popped up in my list of available networks. Sorted!

[CrimsonLiar]

Ah just wait!  Sometime in the near future, Vodafone will probably start introducing WPA2/WPA3-Personal on the routers, the implementation of which is sometimes problematic.  When that happens we'll probably get a flood of people with devices that can see the network, but sporadically can't log connect to it!