Please check the following:
1. Are you using a valid method of payment?
2. Are you using a method of payment that matches the region you are in? Sometimes online transactions are blocked if the method of payment was not issued in the country from which you are buying.
3. If you are using a card, make sure that card number, CVC, expiration date, billing address, and name on the card that you are entering match the information of the card.
4. If you are using PayPal, make sure that the PayPal account settings are correct and that you either have a balance on PayPal or your PayPal account is linked to a valid method of payment, that your PayPal account is not limited.
5. Check if you have any sort of limitations on your method of payment settings that could prevent the transaction to succeed (e.g. daily spending limit, online transactions block).
If you are still experiencing an issue, get in touch with our customer support and we will look into this matter for you.
Please do not send the details of your method of payment to us.