Hello. I’m a new customer. 
I have a problem with DSL connection. Technician visited my place last Saturday, checked the line and concluded it’s fine, I need only plug router to middle socket and it should work he said.  I had no router at the moment, but when I got it two days later and plugged it in, unfortunately in diagnostic mode it shows no DSL line connection. Also when I specify internet access credentials there is no connection. I’ve checked cable, socket and physical connection, all seems fine. 
Screen of Fritzbox 7390 diagnostic in attachment.

Need help. Hotline 0800 gives no options for English-speaking customer.