Hacking Puzzles

I did a hacking puzzle, and I tried a test case. It said the structure was wrong or something like that. It wasn’t a valid test case. It didn’t meet the constraints. However, I tried the sample input given, and when I submitted it, it gave me the same error. This doesn’t make any sense. It didn’t say “Wrong Answer”, it immediately said that the structure was wrong. I lost points because my opponent also couldn’t solve it, but I had a higher rating, so I lost points. What should I do? Someone needs to fix this!