Fix this app!!!

Ive been trying all day to get this app to change the size of the font, but to no avail.. The envelop will print now, but the font stays locked at 12, which is micro size on a #10 envelop. Even when I change the size in the settings, it still prints out at a size 12, instead of 24 which is what I set it for.

Please help, and fix this bug

Omalleysgold about Print Labels