Generic bus setup, infinite loop in configuration


I have a urmet bibus, I followed the correct configuration for the connection. But in the last step it asks to ring the bell and to confirm that it has rung, but then I get a screen that I have to use an alternative setup. But then I come in an infinite loop where I need to do the same setup all over again.

This question was discussed on the forum but no answer was brought to my knowledge. Can you help me on the subject.