Increase Image Size in KB (Photo Size Increase)
Set to at least 20 KB and at most 50 KB. Change the two numbers to your form's range, then choose the photo.
Some exam and job portals reject a photo or signature that is too small in KB, for example under 20 KB, even when it looks fine. Type the form's minimum in Not smaller than and its maximum in Make each image smaller than, and the photo is saved inside that range.