Cannot delete old marketplace listings.

These listings specifically are from 2018-2019 and were no_copy gachas. The listings do not exist in the in-world marketplace folders. In the marketplace listings on the website, they appear nameless, with a quantity, and no other information. Checking the boxes and using the delete function does not do anything. It will say "successfully deleted!" when they are not. Trying to delete individually from the menu on the right does not work either. It's been this way for years.