Hi  @mowgli789 

For your situation, you may refer to the following:

1. unplug the EAP225-outdoor from the router, and plug the same cable into a laptop. this is to check if the cable is still functioning;

2. If yes, you can factory reset the EAP and configure SSID again:

Resetting the password of a TP-Link EAP device typically involves performing a factory reset on the device. Here are the general steps to factory reset a TP-Link EAP device:

The reset button is located in a small hole on the back or bottom of the device, we need to use a pin or pen to press and hold the reset button for about 8–10 seconds. While holding the reset button, the device's lights may flash and the device may restart.

Once the device has been reset, it will revert to its factory default settings, you can now access the device using the default credentials admin/admin.

Please note that performing a factory reset will erase all the customized settings on your TP-Link EAP device, so you will need to reconfigure the device after resetting the password.

  @Vincent-TP 

Thanks for the quick response. 

So I got up on the roof and tried a factory reset. I was able to connect to it the AP directly, and had access to the internet and was able to get into the settings on tplinkeap.net.

However, the moment I went to the Omada Appa and added it back into my SSID the usable WiFi disappears. The AP works. I can see it is working happily through the Omada app, and if I press locate it flashes away happily. It just has no users, and if I walk to a part of the garden where I had reception to it before I now have nothing at all.

I'm guessing it's a setting in the app, but I am at a loss to what.

Thanks again,

  @mowgli789 

the roof, you can see the SSID, connect and get Internet access. But if you go a little farther away, you can't see the SSID?
How high is the roof of your house? How far away is the EAP when you can't see the SSID? All clients can't see the SSID?

You may check if the SSID broadcast in on of off;

Also, please try to adjust the tx power higher.