You have been disconnected. Custom setServerURL() value

Good afternoon! I changed the value of setServerURL() to the URL of my own server. In the end, the application successfully displays the URL of my server, but when I try to connect I get an error - “You have been disconnected”. However, I don’t see such a problem on the official application from PlayMarket if there is a default server URL to my own server. It may also be important that I use the default Jitsi Meet authorization -

I would be glad to get any help!