Help: Secure Domain

Dear All,

First of all, I am not a Linux pro, and I am a new user.
I just installed Jitsi yesterday and it is epic. Set ssl, nat etc…works perfect.

Only thing what is missing is to finish my secure domain setup.
I followed the guide: https://github.com/jitsi/jicofo#secure-domain
Now, when want to start a meeting I need valid user and pass, which is great.
But when I want to send a meeting link it copy’s the link which is vc.mycompany… and ask for user/pass and not guest.vc.mycompany… Also, guest.vc.mycompany… is not accessible. How to fix it? How to check if everything is configured correctly after the secure domain guide has been followed(tried to)? Sorry, but surely i didn’t figure out the concept on this part. Thank you in advance.