Unable to reset router

Hi

I wanted to setup my new hEX S fiber router when i messed up something with the interfaces and the connection got lost. I tried then to reset the router to factory defaults via the reset button but no matter how long i press the button it doesn’t seems to change anything. And when i plug the ethernet it doesnt assign me any ip address so i cannot reach webfig or ssh. How can i reset the router?

You need to precisely time your button press, when you press it too long it will not work.
You press the button and plugin the power, then you watch the LED to first come ON and then after a few seconds starts blinking.
Now IMMEDIATELY release the button.
(ignore the spurious blinks that happen immediately after poweron, first wait for steady ON then wait for blinking)