A shopper says the try-on camera won't open on their phone. What can cause that?

The message the shopper sees tells you the cause:

• Camera permission was denied: they blocked the camera. They can allow it in their browser's address-bar settings and try again.
• No camera was found on this device.
• Your camera is already in use by another app: close the other app, such as a video call.
• This browser does not support camera access: use a recent Chrome, Safari or Firefox. Your store must load over HTTPS.
• The face-tracking model could not load: a weak connection. Retry.

If you turn on Allow photo upload in Plugins → Virtual Try-On → Settings, shoppers can also pick a photo from their device instead of using the camera.