Take a look at the following help desk articles if you experience errors during the checkout process.
- Parameter Invalid Empty
- The Customer Must Have an Active Payment Source Attached
- Stripe Payment Error: This account cannot currently make live charges. If you are a customer trying to make a purchase, please contact the owner of this site. Your transaction has not been processed
- Sorry, This Product Cannot Be Purchased
- Common Credit Card Decline Codes and Next Steps
- The Zip Code You Suppled Failed Validation