source & info.
https://giveaway.tickcoupon.com/get-studio-one-prime-add-ons-for-free/
How to get Studio One 4 Prime + 9 add-ons for FREE?
Go to the PreSonus Shop to log in or create an account for Free.
9 Studio One Add-ons for FREE
Go to this giveaway page for Studio One 4 Prime and add this product to your cart.
You also can add 9 add-ons by the product link above.
Process to check-out
After that, you will be redirected to the order details page
To get the Studio One 4 Prime product key and download the add-on files. Let go to your account page and click into Software tab and Add-ons tab