Recently, in Codeforces Round 677 (Div. 3) I made a lot of hacks on problem F, and naturally, several users contacted me asking for the testcase I used. The problem is that even if I wanted to, I couldn't reply to all of them quickly, because CF imposes a limit of sending a message to 2 distinct users per hour, and even that seems to be implemented incorrectly, as I could only send one reply to one user, even though I only replied to two of them in total.

Can someone from CF HQ check whether this is implemented correctly and, if possible, implement a feature where message replies don't count towards the 2 persons per hour limit.