Unable to Access Premium Assets?

Hello, long time roll20 user and pro subscriber. I haven't really paid attention to the issue before because I generally use my own, but I've discovered I can't use any premium assets from the in-game library. If I try to use them, I'm instead prompted  to purchase the asset. My pro subscription says I have access to these free-of-charge, unless I'm misunderstanding something? Thanks in advance

Just for reference; I notice that if I go to the Art Library tab from the sidebar and click Premium Assets, I have 3 sub-folders listed; Marketplace Purchases(image packs I've paid for, if any...), Pro Sets(I believe these images that are included with a Pro subscription), and Free Assets(images included with all accounts). You can use right-click context menu on the Premium Assets to "Copy to Library"  or "Copy to Folder".  You can also drag and drop directly to the editor window. Can you describe your process of trying to use a Pro Set image?  That may help to identify the problem/issue. Cheers

Mm, I think I see the issue. Because the unfiltered list only shows pro sets and does not give an option for premium sets, I was under the impression they were one and the same. If I do a general search for something common like, say, a mimic - I see a list for all mimic tokens under pro sets, a list of mimic tokens under premium sets, and then a list for mimic tokens from the web. The tokens I had searched for previously did not have any pro set equivalents, only premium options, so I had mistakenly assumed the premium sets were actually the pro sets.