yes there is a time limit from when you post within which you can edit your comment.
topics advance to the top via most recent post but there may be enough posts coming in or a post waiting or something. i am not exactly too clear on that myself as you can tell
when you are logged in, for some reason, when you post it registers as two comments and when you log out it goes down to two. i don’t know why it does that though
hope i helped
😀 Zuberman! 😀