Can't edit typos in my own posts.
I've tried, on a couple of occassions, to re-enter a message that I've typed, in order to edit the phraseology or correct a typo.
I click the little "edit" button on the top row of the message box, but get a response from Pprune saying "You are trying to enter an area that you do not have permission for" (or words similar).
Thought that was the whole purpose of the "edit" button - to get back in and change mistakes.