Hello,
We’re sorry for the issue you are facing while trying to subscribe to Rank Math PRO. This error message can occur due to several reasons. Here are some troubleshooting steps you can follow:
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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.

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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.

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Disable Ad Blockers: Make sure to turn 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.

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Ensure Your Card Supports International Payments: Make sure your credit or debit card supports subscription payments and is approved for international payments in US dollars ($).
After following these steps, please try the payment again. If the issue persists, we recommend contacting your bank to understand why the payment might be blocked.
If you continue to experience difficulties, please reply to this ticket, and a human agent from our support team will assist you further. Thank you for raising this concern!
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.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.