I had a 25 dollar Subway gift card laying around and decided to use it for osu! Before i registered the card it said that my tag was done on November 29 of 2015. After I registered the card it said it was up on December 29 2015. I realize that it takes away from the 25 and made it 15 dollars for my supporting tag. So I would have then 4 more months, but only gave me one more month add to it. Does it just end at the end of the year and will tell me after January 1st that I will have until March 29 2016. What happened, please correct me if I have made any mistakes or assuming something wrong. Thank you!