This app (e.g. Facebook, Messenger, Instagram) does not let the page use the camera. Open the game in your regular browser.
Open in Chrome
The camera is blocked for this page, so the browser no longer asks. Allow it like this:
- Tap the icon on the left of the address bar (lock or settings icon).
- Open “Permissions” or “Site settings” → “Camera” → “Allow”.
- If the camera is already allowed there: phone Settings → Apps → Chrome → Permissions → Camera → Allow.
- Reload the page and tap “Scan QR” again.
The photo option works even when the browser camera is blocked. You can also scan with the phone’s regular camera app.