Why do I see the “429 Too Many Requests” error?
How can I test the API or platform functionality?
Are there fees for declined payments?
What fees can be charged?
How can I view all Pending payments?
How can I find completed payments?
How can I view all account transactions?
How do I attach a receipt to a payment?
How do I add a note to a payment?
What response do you expect us to return for notification webhooks?