Unable to connect to my second server on the phone

Hello all,
I had to format my pixel phone, and now I have to reinstall my apps.
With homeassistant I’m having some problems to add the second server.
The first works fine, but when I try to configure the second server it fails.
Could you help me to figure out why?
If I try to connect via webserver everything works, but not with the app :frowning:

Are you trying to connect to the webserver on the phone too, or on a computer? You should try on the phone.

If I try to connect to the second server from a pc, I can login.
My problem is on the phone.
Phone >settings > companion app > add server

I choose the second server address
I set the login/password
I set the name of my device (the phone name) and I add the position sensors

when I press the button continue it tells me that it is impossible to add the server :frowning: