Yeah, but if my server is in the local network, I have potential threat that someone will access my lan through public server

That is default setting ;)

Hmm, I will follow this tutorial once again.

I did it in the past, but maybe something happened when the token expired ;)

Dont forget to donate your open source…

I moved some chats to Threema and im satisfied… they have family options so paying for one license is for 6 people