I have been having trouble for some weeks now. When I try to edit my own replies, the website does not allow me to do so. I have tried three different browsers and the problem persists on all of them. FYI.
It's set up to not allow edits after a certain amount of time. I can't remember how long off the top of my head. Moderators can edit so if you really need something changed, you can pm one of the mod team and ask them to change it for you.