Seems like it was some website issue (I think, not sure because this was rare as in I did not see many or any posts about this).
But I had emailed the consulate and they said to try again and if the issue persisted then simply proceed and ensure all personal information is correctly manually filled in.
Thank you guys for your messages!
*For anyone else reading that may be experiencing this - my images that I had tried uploading was uploaded (meaning it shows up on screen) but the warning always showed regardless.