@telefonbauPETER 

 

Hello and welcome

 

It does sound like the device has hung up on you, did you try scanning the LAN to see if its got a new or different IP? (it shouldn't but worth a try).   Your best option would be to reset the device using the button as you mentioned then re-adopt the device into the controller.

 

Hello Philbert, thanks for your quick reply. I don't get a connect to the AP. The AP does not get an IP address from the DHCP. Can I reset the AP using the reset button?

@telefonbauPETER 

 

Certainly, resetting sounds like your best option

 

With the device powered on, press and hold the RESET button for about 5 seconds until the LED flashes red/green/yellow alternatively twice, then release the button. The device will restore to factory default settings

I can't do a reset. The LED lights up green for 2-3 seconds, off, yellow, off, green, off and then again from the beginning.

@telefonbauPETER

 

It sound as though the device is in a boot loop, only ever seen that once

 

Try doing the reset anyways, while powered on hold the reset button for around 10 seconds and see if that helps.   If not you may have to contact TP Link support, log a ticket with them

 

 

 

No, nothing changes, whether 5 or 10 seconds reset button. Then I'll open a ticket. Thanks for your help, tell yourself humbly if there is a solution.