Nuki Opener with Siedle HT 611-01

Hello together,
I bought a Nuki Opener and connected it to my Siedle HT 611-01.
Everything works fine, except for the “Ring to open” function….

I connected everything according to the instructions in the app.
The yellow wire is not connected, as this is not necessary according to the app, as there was no wire in connection 7.

Attached are pictures of the situation before and after connecting the Nuki opener.

Does anyone have an idea what the problem could be?

I have already read several forum posts, but unfortunately nothing has helped.

Thanks a lot!

And the picture before connect the Nuki Opener