Help Page

◆ If payment authentication fails:

Unfortunately, the cause cannot be determined by our system. It is likely an issue with your credit card company. Please try the following:

• Try using a different credit card.
• Contact your credit card provider and inform them that you are trying to make a payment to “SMART Conference” and provide the payment amount. They may need to verify the transaction with you over the phone. (Procedures may vary depending on the card provider.)

◆ If you see the error message:

“HTTP method POST is not supported by this URL”

Possible causes and solutions:

• Network environment issues
  If you’re using a highly secure network (such as at a company or university), some requests may be blocked. Please try using a different network, such as a home or mobile connection.
• Outdated browser
  If you’re not using the latest version of Google Chrome, please update to the latest version.
   
• JavaScript is disabled
  If JavaScript is disabled in your browser, the payment process may not work correctly. Please enable JavaScript.