Txdigest.com

According to the FAQ: You can edit a post by clicking the edit button for the relevant post, sometimes for only a limited time after the post was made.
I wanted to edit one right after I posted it. But, I can't find any edit button.

Let me check, that option was turned on in the initial set-up.

The edit feature had a relatively short time period. I made it longer, see if it helps.