Question about Editing a Thread

Just a quick question about editing a post/thread.

I have a ad up for some items for sale. I edited the original for sale post, but now I cannot edit the original post. I bumped the thread, and added the items that are "SPF". My BTT posts can be edited, but not my original post.

Is there just a limit how many times a post can be edited, or is it an actual problem?

Thanks,
Josh

There's a time limit on editing a post - 4 days.