Hey!
The card might not have been activated at the shop. Pop back to the place you purchased it from and ask if it could be activated. Then, the PIN should work.
If you want us to check if it is activated or not, one of our advisors can do that. However, I wouldn't post it on a public board like this. You can message us directly by click on "About Us" above and then selecting "contact form".
Airhorn Enthusiast