To be fair, the puzzle didn't tell them at the time of their post, I added the "must be a full match" line after seeing confusion here, and it was not in the or

To be fair, the puzzle didn't tell them at the time of their post, I added the "must be a full match" line after seeing confusion here, and it was not in the original puzzle (people doing puzzle hunts are expected to deduce more than random people on the internet, I guess!).