Browser mostly gets no connection to DigiConnect ME HTTPS-Server

It’s a different behavior, anytime i become a untrusted connection and then i accept this risk,
the Browser and the Digi AWS works correctly.
Mostly i have a timeout and no connection to the DigiConnect ME HTTPS-Server.

I tested this whith NET+OS 7.3 and NET+OS 7.5,
different Browsers
also with android and ios

NA_HTTP_SECURITY_MULTIPLE_ACCESS is aktiv

Any suggestions welcome!

I answer my question itself.

The DigiConnect ME works fine.
I hav a problem with my network.
When i fix this, all browsers operates correctly.