Yesterday, a technician came to install my Fritz!Box router. I signed up for a Telekom DSL connection through CHECK24. The DSL line is synchronized and stable, but the PPPoE login does not work. The connection does not seem to be activated yet. 

I signed the contract in January, and I have been charged for the router + installation, but I have not been charged for this month's internet. I wonder if that is the reason why Telekom has not activated my connection. 

I don't speak German, and there is no English phone contact, so I am writing here. I am willing to give my credentials and information if someone can help me. Thanks.