If your photos are rejected, this means they couldn’t be used by the Candid orthodontist to properly diagnose you. There are two reasons the photos may be rejected – either the quality of the images are too lower, or they don’t show your teeth and gums sufficiently.
To avoid these issues, make sure you follow the guidelines that come with your remote kit. Take your photos in a well-lit area, and be weary of the flash being too bright. If you follow these instructions your photos should be OK for the orthodontist to use in order to assess you and give you feedback during your treatment process.