For this challenge, we are given the following hint:
Going to the link give this page:
Looking at the source of the page, I see the images are named in sequential numbers:
Based on the hint “you are suppose to find the old person out them” on the page, I assume the image names (numbers) correspond to the order they were created. I look to see if there is a 0000.jpg file and there is!
I paste the name “Marie Collinsworth” into the text box and hit the enter key and get the flag as a response: