Hey, there is a problem. It's not possible to create a room by clicking a button. It also won't work in your demo... the error: http://prntscr.com/bk7e93
I get the same error, when trying to join a random room: http://prntscr.com/bk7tus
But I found a workaround for my problem. What exactly is the InterestGroup? Photon.Property, Photon.ActorNrAt() etc..is there an explanation for all these?
Different Photon concepts available in all SDKs described in general documentation https://doc.photonengine.com/
Also plugin has short descriptions of js lib methods and parameters it exposes.
Interest groups allow send events to group of players only instead of all. Player should add this group first to receive such events.