Hello,
We apologize for the issue you are facing with the payment on our site. Here are a few troubleshooting steps you can try to resolve the payment error:
-
Select Your Current Location: Ensure that the country displayed in the dropdown menu at the top-right corner of the checkout page is correct. If it shows a different country, click on it and select the correct one.

-
Turn Off Your VPN or Proxy: If you have a VPN or proxy server enabled, please turn it off. Some browsers also have built-in VPNs, so check your browser settings to ensure it’s disabled.

-
Disable Ad Blockers: We recommend turning off any ad blockers while attempting the transaction. Even if you did not install one, check your browser settings as some browsers come with built-in ad blockers.

If you continue to experience issues, please reply to this ticket with your site URL, and a human agent from our support team will assist you further. Thank you for raising this concern, and we hope to resolve it quickly for you!
Sources:
Troubleshooting Payment Issues at Rank Math » Rank Math
This is an automated reply from Rank Math Support Bot. If you need further assistance, please reply to this topic and a human support agent will reply to you shortly.