I am using 5GHz uplink for my tp-link RE220 by manually setting it under the advanced menu. Therefore, the extender extended network broadcasts only on 2.4GHz, but there is no option to select a chann

I have bought 4 tp-link RE220 and configured them to work in access point mode, uplink via ethernet port. I have cat6 ethernet wiring, with 1/1Gbps uplink, all ethernet ports achieve at least 890/800M