User-FSBGQ, joining our rooms

so i am having an issue with a random user joining my room, his name is User-FSBGQ
he has interrupted my videos and crap, anyone else having this issue?

How did you communicate the link to the room between the users? How many users are in total in your room? All Watch2Gether rooms are private by default and you have to know the URL to be able to join. Additionally you can set your room to “Members only” in the room settings. This way you have to approve every user before they are able to join.