[Crypto] - You Can Do It! - Solved, however flag won't be accepted

So the challenge was a pretty straight forward one, and I got a string that makes sense. However, I tried a LOT of ways to submit it as HTB{string} but it gets marked as incorrect flag. I tried uppercase, lowercase, including and excluding exclamation point, rearranged a bit.

I also saw in some other duscussion that people had problems submitting this one? Did we miss something?

So I was wrong, solved something that looked like the correct flag but it was something else (same easy technique)