I have installed an jitsi instance on my own server which is behind a NAT router. The installation I have done accordingly to the Self-Hosting Guide at the jitsi meet handbook.
I am using a wildcard certificate (*.domain.de). This is working for every browser local and connection from the internet. The jitsi meet app on an iOS device works fine.
On a Samsung Galaxy Tab A running Android 7 the app doesn’t connect to jitsi.
Info from the app when I want to connect: “The connection is aborted. Please check your network connection.” When I use the Google Chrome browser on Android and open the Connection as a desktop client it works fine.
At Wireshark I can see that the Android app get an “Certificate Unknown” alert.
Linux version: Ubuntu 20.04 LTS running jitsi instance
Does anybody have an idea where is the problem?
Thanks for your help.