Can complete last configuration step - Google home and Home Assistant

Hello, stuck at the last step in configuring my Google SDK.
I have a verified working remote connection with duckdns…
In the last step when I open the google home app on my phone I get this.

Clicking on it I get to the log in screen and I enter my info.

Starts to connect …

and then I get this (sorry for the swedish) but it says: Could not update settings, check the connection