The help section says to post in the forums, so far not helpful, can I get help ordering my shirt? It tells me my code is invalid when it's the code, copy and paste that I was given. Can't regenerate a code as it only gives you 1.
I had the same invalid message. However, when I returned to my rewards page, I was able to click email discount code and I got a different code that did work the second time around. I do have multiple gamers in my household and ordered multiple shirts. Not sure if this factored into my invalid error or not.