Christmas Coupons offer

Hi, I’m trying to use the Christmas coupons.

U.S. Space Force - Galaxy
B Sharp Watches - Christmas Snowfall
LCARS 2.0 - Official Star Trek

These coupons are written in the offer, to be for free faces

But even if I see 100% discount, when I reach the download page in the Galaxy App, it 's a 50% discount…

So I don’t understand… What am I doing wrong?