Switching off 5ghz brings everything down
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In order to add some IoT devices, my iPhone needs to be on a 2.4ghz network. Since I can't run separate SSIDs for 2.4 and 5 on the Deco, I tried turning off the 5ghz temporarily. The wifi SSID still showed, but my iPhone couldn't join the network and my iPad joined but had no internet connection. All my Apple Homekit hubs (Apple TVs and Homepod Minis) also went offline. It took almost an hour to get my Homekit stuff back online. Normally I'd blame this issue on the Homekit hubs not switching over to the 2.4ghz wifi quickly, but my iPhone and iPad couldn't successfully join the 2.4ghz side even though I was here to force it manually. It's like there was no 2.4ghz wifi.
Last week I tried to set up a 2.4ghz only guest wifi, but that also brought everything down. Do I need to reboot the X20s to get 2.4ghz to work?
EDIT: Let me add here that the 2.4ghz band was and is working. My existing IoT devices are connected. It's only turning off the 5ghz band that blows things up. When I tried to create a 2.4ghz Guest SSID, I allowed it access to the same network as the usual SSID. I figured I had to do this to bring up the IoT devices in that IP range. But creating that SSID knocked all the Homekit hubs for a loop. TP-Link really needs to let users name the two wifi bands different names. I don't know why this isn't the default when other wifi routers have been doing it for years.
