Multiplayer - Can't find sessions on different computers !

Hey everyone … I hope all of you are doing well … I have couple of very complicated issues … I’m developing a multiplayer VR Classroom … so far everything is working well …

I’m using advanced seesions plugin to create and find sessions (aka classrooms that teachers make) … but when my friend tried to join a session i made for testing (after packageing) … they couldn’t find my session … is there anyway for me to fix that without using steam online subsystem ?

This project is being made for paralized school children …

The other issue that i’m having is that I made a chalkboard object … this object has a widget component called chalkboard widget … the teacher can a canvas widgets (which are basically scroll boxes that the teacher has the ability to insert text and image widget and draw them on these canvases that can be added on the chalkboard widget)

The issue that i’m having with this chalkboard actor is that whatever the teacher do … it doesn’t get replicated to the other clients … anyone can help or know someone who can ?

Thanks in advance
Cheers

P.S.: Here’s a screenshot of the code i’m trying to implement …