Payment issues
The most common error you can encounter is:
This payment was declined by your bank. Please try again, or use a different payment method. Contact your bank for further information.
The bank can issue a decline due to various reasons. For example, insufficient funds, bank deems transaction fraudulent, invalid CVV code provided in the details, etc.
Please make sure that all the details you have entered are correct. If you're using PayPal, make sure your credit card is linked to the PayPal account.