I am having issue with my credit card info being accepted..anyone else have this issue?

I live in Canada and I'm wondering if there's a specific way of entering my postal code? I keep getting a message when I try to add my card that it's either invalid or info is incorrect...I've verified this several times and check with my card provider to make sure there's no issue with the card. I've enter the address the same way is it on my card statement...Any suggestions?