Check the photo image of the document and take the following measures as needed.
If the photo image is blurry
If you take a photo of a document from an angle, text at the edge of the document may appear blurry.
Take a photo of the document from directly above.
If the colors in the photo image differ from the colors of the document
Depending on the background color of the surface on which the document is placed, the colors in the photo image may differ from the actual colors of the document.
Take a photo of the document against a background with a different color.
If the problem still persists, take a photo in manual photo-taking mode.