Hi, I recently bought my first digital tablet (XP Pen Artist 13 Gen 2) and was wonder what product ID I'm supposed to enter to get a bundled free copy of ArtRage 6? I entered my XP Pen serial code which I found at the back of my tablet but that doesn't seem to work. I checked XP Pen's page about downloading ArtRage 6 and it just directs me to the website. Should I submit a support request or is there some other ID that I'm supposed to have and enter?