My camera or microphone doesn't work in the Studio

The Studio tells you exactly what's wrong:

• "access is blocked": click the camera icon in the address bar, allow camera and microphone, reload.
• "none found": plug in a camera (or start your virtual camera), then pick it in the camera list.
• "is busy": another app or tab is using it (Zoom, OBS preview, another tab) — close it, then pick the device again.
• Try another camera or microphone from the lists in the Studio bar.
• You can't go live without a working camera. Use Chrome or Edge on a computer for best results.