Deceitful Batman - can't submit flag

Recently I did Deceitful Batman crypto challenge and it was really easy to get flag but when I try to submit it I get error saying incorrect flag. I know for sure that it’s correct since there is github repo with writeups. You probably all know it but password for machines writeup is root flag and for challenge password is challenge flag. And I could unlock that pdf with my flag. So my question is if I should contact support about this or what else should i do

Lol same here. I can’t submit the flag, but I can read the writeup from github using the flag. Any luck on this?

Same problem

which flag did you use?


and worked for me some time ago.

Same problem.