Hmn, that’s definitely odd, and seems to imply that itch isn’t recognising that you’ve purchased the version of NPGLOPE on this page.
I think this might be an enquiry best suited for itch support, as it seems that your purchase was somehow not correctly associated to your account or something — if it doesn’t show up in your itch Library then that confirms the issue.
In any case, thank you for your kind words, and we hope you enjoyed National Park Girls (and our other works) as much as we did making them…!