Can' get it working

I’m begining to get mad…

Every time I install HAOS on a rasberry 4, everything goes fine, I can create a new “home”, interact normally, etc…

And after a few minutes, impossible to connect, despite the fact that the supervisor says that everything is healthy.

I tried many times, on RPI3 and 4, on SD card or SSD, from different PCs, and even with a supervised install.
Always the same, start OK, but connection impossible after a few minutes.

I googled the pb, but can’t find any idea on that.

Any clue for a desparate and lost french man ?..

Thanks for your help
Christophe

The message is “ERR_CONNECTION_REFUSED” when I can’t connect

With little information to go on and no logs, I would say your network or DNS is what I would start looking at