backup10 is not working for the canadian store...is it only the american store that the discount applies to?
I also answered this on your separately started thread:
We are actually having some trouble with the Canadian store due to limitations with the Amazon web store platform. We can manually refund 10% for the orders placed without price matches for our Canadian customers if you could call us or email us with the order number once the order is placed.
Just mention the coupon code in the email or via phone!
Sorry for the inconvenience; we are in the process of troubleshooting these issues.