Open the person's profile or user menu to find Block and Report. Choose the action that fits what happened, and give a clear description if you send a report.
What should I include in a report?
Explain what happened, where it happened, and the person's username. Include the approximate time and any relevant messages when the form allows it. Do not include passwords or private sign-in details.
Problems inside a room
Tell the room owner or an admin. They can kick or ban someone from their room. A ban can be removed later from Room Settings → Members → Banned.
Leaving a room or conversation is also an option. You do not need to keep talking to someone who makes you uncomfortable.