WIFI GUI setup

I am trying to change from ethernet to WIFI (for tuning) and then back to ethernet using the supervisor/system/host/IP address change on the GUI.

After setting up my WIFI SSID and WPA-PSK password I tried rebooting and unpluging the ethernet but the router doesn’t show the Rasp PI and I need to power down the Rasp PI and start it back up with the ethernet.

What am I missing?