1. photo review failed: if the uploaded photo does not meet the requirements, such as wrong format, wrong size, insufficient definition, etc. , a question mark will be displayed on the photo, indicating that it needs to be modified or re-uploaded.
2. Incomplete photo upload: Sometimes, due to network or other reasons, the uploaded photos will be uploaded incompletely, resulting in a question mark on the photos. In this case, you need to upload the photos again.
3. The photo is being processed: Sometimes, the system needs some time to process and verify the uploaded photo, so a question mark will be displayed on the photo, indicating that the photo is being processed.