Hello,
Sorry to hear you are having issues. I believe, you will have discount when you upgrade from Individual purchase to Object Desktop subscription. You can go to Object Desktop Product page and click on "Get it now" under the upgrade column.
Nothing will get change on your already own products when you upgrade to Object Desktop subs. Your purchased product will still be there in your account product page.
Your new product page would look something like this.
Thank you.
Basj,
Stardock Community Assistant.
