Hello,
Thank you so much for getting in touch.
We do not see any payments from you previously with the account you are using to raise this ticket.
Do you perhaps have another account with us?
In case you are just trying to purchase a new subscription, you can do so from https://rankmath.com/pricing and simply choose the appropriate payment method.
Do let us know whether you are trying to change the payment method on a current subscription or purchasing a new one.
We look forward to hearing back from you.
when click button “buy”, the popup request credit card information , how can I pay via paypal directly?
Hello,
Could you please confirm from which country are you purchasing Rank Math? You can click the PayPal button as shown below to change the payment method
Also, if you are trying to validate data while accessing the website from a different location, you need to force the change of country in the dropdown at the upper right corner of the screen

Let us know how this goes.
Thank 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.