I'm a previous owner of the last versions. There is no download link in my account at Stardock, why?
You owned IconPackager 3 and 5, not Object Desktop. IP10 (the current versio) is only available to Object Desktop subscribers at the moment.
If you log in at https://store.stardock.com/myaccount/products you will see a links for IP3 and IP5. You should NOT install this version on Windows 8 or 10.
If you want to upgrade from your stand-alone products to Object Desktop, you can do so here: https://www.stardock.com/products/odnt/odnt-upgrade.asp