Hello,
The upgrade isn't automatic if you want to do the upgrade follow these steps , please.
1st - Would you do this PURGE to uninstall 8 to clear the way for 10
which is in Beta 2 right now . The Purge link https://forums.stardock.com/485954/deskscapes-support-faq#reinstalling
Reboot and ReInstall the DS10 you'll find it here in your downloads https://store.stardock.com/myaccount/products/
Reboot , try it out and see what you think and let us know , Thanks .
AzDude
Stardock Community Assistant