The call or video doesn't work

Allow camera and microphone access when the browser asks (or click the camera icon in the address bar and allow it), then reload.
Close other apps or tabs that use the camera (Zoom, another call).
Use an up-to-date Chrome, Edge or Safari; on a phone, keep the page open in front.
No sound in a room? Tap "Tap for sound" on the video.
Check your connection with the Connection test (menu → Connection test).
"The connection was lost" ends a call — just call again; you're only charged for connected minutes.