If you have problems using a configuration domain such as tplinkeap.net, try the fool-proof method using IP addresses:
- Set the EAP to factory defaults by pressing the RESET button for 5-7 seconds until its LED starts blinking.
- Connect the EAP directly to your PC using an Ethernet cable. Don't connect it to your network.
- Set your PC's IP to a static IP from the 192.168.0.0 network. For example, set it to 192.168.0.10. Apply.
- Start a browser and load the web UI of the EAP by addressing http://192.168.0.254 in the browser's address bar.
- Set an unused static IP to the EAP from your regular network, say 192.168.1.2 or whatever you use. Save it. Connection to the EAP now temporarily drops.
- Reconnect the EAP to the network, set PC back to DHCP.
- Connect PC to the network, load the web UI using the newly set IP, log into EAP, done.
By the way: your CAPS LOCK key is stuck. 