Why can I use my phone / laptop / tablet /. Do not log in with my repeater?

I have a repaeter of devolo (DEVOLO 5000 ac wireless repeater) connected to expand my wireless network, but I can't log in now (on my phone, etc.). I'm always shown an error message in which authentication is not possible. How can I change that now to be able to log in to any device to get the increased wi-fi now.

This message says that your password is wrong… Factory reset from the repeater and set up again if you no longer come in the repeater menu