Dashboard v.2 Basic Auth different from V.1?

Hello folks,
I am very happy about my Dashboard (v.1) node red application which I built some years ago, and it is still very useful but now I would like to migrate to Dashboard v.2.
No problem in transcoding from v.1 to v.2, but i am struggling with basic http auth.
With Dashboard v.1 behind a reverse proxy (NGIX) i was able to call the Dashboard page sending user and password (I know...it is dangerous) in the URL.
With Dashboard v.2 this seems impossible, and the website (which is deployed on a Digital Ocean VPS with proper fixed IP and nameserver) keeps asking user and password, even if i send it via URL.
This problem happens in iOS Chrome with Dashboard v.2 but it works with Dashboard v.1.
So strange!