Hello, I am struggling since several days to setup my internet connection. I have the disadvantage of not speaking the German language so hotline support didn't work (although I managed to reach a service technician).

I have a modem installed by the Telekom technician, a Glasfaser Modem 2, and the router I want to connect is a TP-link AC 2300. I have the login credentials from Telekom (Zugangsnummer, Persönliches Kennwort), received by mail, but when setting the router with a PPPoE connection using the Zugangsnummer as Username and Persönliches Kennwort as Password the setup fails.