Hi again @rampus
OK, I just uploaded a Test File and figured it out how to delete it
It's a tricky one since there's a visibility issue on the webpage actually, in fact the text "delete your entry" is a link, just click on it, you'll then have a popup window where you can confirm the deletion.
Once done you can then submit a new entry
FYI --> @bryan_spence Would be cool if that text link could be highlighted or emphasized with a different color or whatever, quite confusing at the moment. Think there was a similar issue with the old site BTW