The coupon has been remade! I made it slightly bigger, so the letters are 2 lines thick and 2 layers tall. There should be no more problems with printing this. Also, I added the Inventor project file if you want to edit.
Simple coupon you can use as a gift or a thank you to someone.
The barcode part can be broken off to void the coupon after use.
Use filament change at the last two layers, or just paint the letters.
The author marked this model as their own original creation.