I recently bought tier 3 and it gave me three redemption codes and so I noticed when activating them on a mixer I basically had to activate all three to get the full allotment that was for my tier 3 I realized after buying it that I want to upgrade to tier 4 but I see a message that says you can only redeem a Max of three on unmixr. So I'm confused as to how this works and if I can upgrade to till 4:00 do I simply just buy one tier level 1 code again to make it go to tier 4, i need help