Special Config for mobile apps

Hey all, I tried my best to find solution, read limited documentation, but I failed. I created my own Jit.si server and it works fine. But there is no way I can connect to it via an Android app. In settings, I did change server to my Jitsi DNS URL, but I am still getting an error while trying to connect it.

YES I use Let’s encrypt cert.
NO I don’t have Apache2 or NGINX
I tried to do all the steps from the documentation to prevent random people to create rooms, but it just doesn’t work for me…

Is there any special settings I need to do to make it run? My server is at: https://meet.clovek.cc

I would much appreciate if you give me a hint or just forward me towards proper documentation for the topic.

Have a nice one!