Hello,
Thank you for contacting Rank Math support today and bringing your concern to our attention.
Those are one-time and do not renew. They are added to your account as part of the launch offer and we will be adding an option to purchase credits separately very soon.
For now, the only way to get more credits is to upgrade your account.
Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.
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.