@AdrianFLP Have you tried the configuration steps here: https://techcommunity.microsoft.com/t5/windows-11/how-to-set-up-a-mobile-hotspot-in-windows-11/m-p/2764785 I think Archer TX20E also supports...

@abdu711 Hi, May I know the model number of your range extender? Can you share more details here about "It currently does not work on 5G or even 4G "? It is also suggested to refer to the following...

@Akhilaiz Hi, did you connect TL-WA850RE to the new router via WPS button? Did the RE LED turn on? If it is on, the extender might automatically copy the SSID of the host router. You could refer to...

@Ache Hi, You can still find a download link for firmware 1.7.4 on the EN site. But It is suggested to wait for a while for the new firmware notification from the Deco APP. Best regards.

@TL-98 Welcome to the community. Is the guest network set to 2.4GHz only? Do you have any issues when connecting to the 2.4GHz band of the main network? I checked the release note of the latest...

@asrocks5 Hi, welcome to the community. You can refer to this link: How to set up 3G/4G or 4G/5G Backup on Deco router Best regards.