You are not in trouble. Nearly all classified ad sections are non-repliable and non-bumpable. This was needed for two reasons:
One, some folks were unnecessarily bumping ads just to keep them at the top, posting things like:
"Hey, that's a nice litter! Can you post pics?"
"Sure, here they are!"
"Wow, I like the chocolate one..." etc, etc.
This practice was bumping these ads to the top of the forum and penalizing those who tried to abide by the rules. So we had to make them non-repliable, non-bumpable.
Note, if you have a classified ad, you can edit your ad as frequently as you like.
Please read the guidelines at the top of each classified section to insure that your ad is within compliance with the guidelines.