Hello,
We apologize for the issue you are facing with Rank Math PRO not showing up in your account. This situation often arises if you might not have connected to the website using the correct account. To resolve this, you will need to disconnect your account and then reconnect it with the correct one.
If you are a Rank Math PRO user, please ensure that you have installed the Rank Math PRO version alongside the Free version to activate the PRO license. You can refer to this dedicated knowledgebase tutorial to install Rank Math PRO on your site.
To disconnect your Rank Math account, navigate to WordPress Dashboard → Rank Math SEO → Dashboard → Help and click on Disconnect Account as shown below:

Once disconnected, reconnect using the correct account details. If you continue to experience issues, please reply to this ticket, and a human agent from the Rank Math Support team will assist you further.
Thank you for raising this concern!
Sources:
Website Not Shown In Rank Math Account Area » Rank Math
Hello,
Thank you for your query and we are so sorry about the trouble this must have caused.
We have replied to your email to address your issue. Please check your inbox.
Looking forward to helping you there.