Cannot see or setup my Archer VR2100 on the tether app unable to log into it via the web page either

@woozle hi yes it's the Archer VR2100 the dual band feature can be enabled but the issue is that for example our robovac only operates on 2.4 ghz and I'm thinking that if the phone is on 5ghz it...

I have bought an extender with one mesh capability and new AC2100 router. I have several devices in the house that only work on 2.4ghz and also requires that the phone is also connected to 2.4ghz...