When trying to scan the QR code in Riffio, if you get a "Permission denied" error, that means that the app likely doesn't have permission to use your phone's camera.

If you're using iOS,

• go into the Settings, then scroll down and tap on the Riffio app. Toggle the switch beside the Camera so that Riffio has permission to access your camera.

If you're using Android,

• long press on the Riffio app and select App info. Tap Permission, Camera, and then select either Allow only while using the app or Ask every time.