Can you get admin's note? I heard the website runs only on client-side so should be secure...
https://computeration-fixed.web.jctf.pro/
If you find anything interesting give me call here: https://computeration-fixed.web.jctf.pro/report
The flag is in the format: justCTF{[a-z_]+}.
Happy hacking!!
The previous challenge has an unintended solution, you might want to first check that out