How have you posted this question if your account is deleted? HN has some protections to guard against unwanted behaviour from new accounts, so maybe your IP a

How have you posted this question if your account is deleted? HN has some protections to guard against unwanted behaviour from new accounts, so maybe your IP address triggered something, if you're seeing strange behaviour when you try to post/comment/vote. But for questions like this you'll be better off to ask the moderators via email (hn@ycombinator.com) as they can actually take actions like removing account restrictions :)