Over the last few years it happened a couple of times that members removed the content of their posts by editing them. This left holes in discussions and conversations and sometimes photos from gallery topics were missing.
To prevent this from happening I changed the settings. It's now only possible to edit your post within the first 30 minutes it's made. I understand this can be annoying for some and I'm sorry for that.
I hope you understand.
(In case you really want to have something changed, you can contact one of the moderators. )