The common reasons for payment errors are the type of card used, insufficient funds, and banks not allowing the transaction.
Here are some workarounds to address the issue:
1. Use a Visa, Mastercard, or AMEX card. Other types of cards are not accepted currently.
2. Check if the card allows monthly subscriptions.
3. Try a different card or use PayPal, if available.
4. Call your bank if the transaction is not allowed, or if there are any international restrictions with the purchase.
5. Switch to a laptop/desktop device, use Google Chrome as your browser, then reattempt the purchase.
If you're still having difficulty completing the purchase, you may submit a ticket here:
Helpdesk and one of our Support Specialists will be there to assist you.