@Rudberto 

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.