@Paul_S_ I doubt that the router or tether app decides whether the client is wired or wireless based on its MAC address. Using a randomized MAC address by mobile devices is just a security feature...

@mustafa-6 The only way to regain access to the device if you forgot its login password is to use its reset button. Press and hold for about 10 seconds to reset to factory defaults, then re-configure...

@easyJet You can see the system logs here: The operation mode of the device can be seen here:

@Frooll A routers models like Archer AX53/Archer AX55 (these are wireless routers) should cover your premises. You have to be careful when choosing a device - you need to be sure if you need a modem...

@Immanvvreite According to PCGuide website that would be Archer AX55 - <https>://www.pcguide.com/router/guide/best-under-150/

@CloudZero You can check your AX23 ethernet port negotiated speed here: If it's not 1000mbps, change the cable between AX23 and Deco M5 and check if there's any difference.