Hello, we apologize for the issue you are facing while trying to purchase the Rank Math PRO plan. The error message you received typically indicates a problem with the payment process. Here are a few troubleshooting steps you can try:
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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 your actual country.

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Turn Off Your VPN or Proxy: If you are using a VPN or proxy server, please turn it off as it may interfere with the payment process.

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Disable Ad Blockers: Make sure to turn off any ad blockers that might be active in your browser settings, as they can sometimes block payment transactions.

If you continue to experience issues after trying these steps, please reply to this ticket, and a human agent from the Rank Math Support team will assist you further. Thank you for your patience!
Sources:
Troubleshooting Payment Issues at Rank Math » Rank Math
I have tried all prosses still can’t buy
Hello,
Thank you for contacting us and sorry for any inconvenience that might have been caused due to that.
Please ensure that your payment method supports the following:
– Payments in USD $
– Supports subscription-based payments
– You are not using a prepaid card
– International payments are turned on
– Your IP is not a Proxy, or you are using any VPN or hosting service
You can also call your bank and ask what’s stopping the payment from going through and request them to approve it on your end.
If the issue persists, or the methods above don’t resolve the issue, please send a screencast link to the sensitive data section. You can use a tool like loom to record what you see on your screen.
Let us know how it goes. Looking forward to helping you.
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.