I am setting a Raspberry Pi Zero W to be a repeater. I have successfully installed OpenWRT and enabled WiFi.
I then went to the LuCA interface and tried to connect to a WiFi network. When I tried on the LuCA interface, it disconnected the WiFi and displayed "Can't connect to this network" for about 30 seconds when I tried to connect to it, afterwords it connects successfully. I tried running the commands LuCA was trying to apply manually followed by uci commit and rebooting.
Now, I can't connect to the WiFi without getting "Can't connect to this network". I've tested on two separate computers with one running Linux and one running Windows.
This is difficult/impossible on most one radio WiFi routers. Until it has connected as a client to the upstream network, the AP network is not available.
I suspect, but have never seen this written, that this is likely because the radio is scanning for the upstream network over multiple channels, and only when it has settled on a channel will the AP channel be stable.