Hi! I understand your friends can't see your camera on Tango. Let’s start by making sure a few basics are covered so your video is visible to them.

1. When you’re in a call on Tango, do you see a "Video" button at the top of the call screen? It looks like a little video camera icon.
- Make sure you have tapped this to turn your camera on. Sometimes it’s easy to miss this step, and if it’s off, your friends won’t see your video.

2. Next, check if Tango has permission to access your camera on your Windows device:
- Go to Windows Settings > Privacy > Camera.
- Ensure camera access is allowed for apps and specifically for Tango (if listed).

3. Are you using the front-facing or rear camera? On Windows with WebKit browser, sometimes this can be a setting in Tango or the browser pop-up asking for camera selection—make sure the right camera is chosen.

4. Also, ask your friends to check if they have any "hide video" or similar setting activated on your video feed, which could block your camera view on their side.

If these are all set and still no video, try restarting your computer and reopen the app/browser session to reset the hardware access.

Could you let me know if you have already tried these or if something feels unclear? That way, I can guide you better!