How to delete some of My Attachments?

[AKorenc]

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Hi,

I simply cannot figure out how to delete some of my attachments to free-up some space ... In December I posted two ads that are long gone, but the images of the items I uploaded at that time are still burdening my available data space > I can't see the old ad posts, but the images are still there? If I click "Manage Attachments to free up space" I see the images but not a single action button or option except "Sort by" and "Filter by" ... So, now what?

Thanks for helping me out with this issue ...