The challenge points you in the direction of: wpictf.xyz with a hint of "my sources"
source in wpictf.xyz's page says can't be a robot,
robot.txt shows inspector.txt
inspector.txt says the wpicsc club webpage could be of use
wpicsc club webpage's source code says "check out our prizes" in a comment
go back to wpictf.xyz check out prizes, and look at the page in inspector (hence the challenge name). The flag is there: