XenSupport's site went back up since this was posted, and the developer replied over there so I am including his response here so that anyone browsing this thread will see the answer too:
Since this plugin is one of the prerequisites to use your Card add-on (because of the XP system), I was wondering what all the possible ways were for users to earn XP and if there are "advanced" options.
For example, if I've connected a payment system to the board for people to buy a...
I'm interested in checking this add-on out and have been keeping an eye on the XenSupport demo site to see when it comes back up.
In the meantime, a preliminary question I have that I've been itching to ask is how the booster packs and card sets work.
Is there just one catch-all "booster pack"...