The ability to edit submissions is time-limited, IIRC. If you no longer see an edit link, you're likely outside of it. You can get in touch with the mods via th

The ability to edit submissions is time-limited, IIRC. If you no longer see an edit link, you're likely outside of it. You can get in touch with the mods via the Contact link in the footer and they can update it for you. In my experience they're quite responsive.