Sorry to hear about the recent issues you have been experiencing.
I checked your account, you do have the full version of Studio One 3 Artist in your account. This is what came with your AudioBox.
Here is a comparison chart of features if you want to know the difference between Pro and Artist: https://www.presonus.com/products/Studio-One/compare-versions
Also, use this guide to activate Studio One. You will not have to re-enter your license key, it is already registered. However, it does show you already activated Studio One 3 Artist on your computer. If you still need to activate, use this guide: http://support.presonus.com/hc/en-us/articles/210049863--3-Studio-One-3-Software-Activation-Online-Computer-
Please create a support ticket if you would need further assistance. Here is a link to create a ticket: http://support.presonus.com/hc/en-us/requests/new