Former admissions officer here. If you feel that your LSAT score is not an accurate representation of your abilities, you can answer "no" and then attach an LSAT addendum to the application with your explanation. Good luck!
I guess a deadline to upload a new photo must have passed. Anyway, I'm just going to go to the test center and hope for the best. If they turn me away, presumably I could write a test day complaint or something and retake it??