Hello,
We apologize for the issue you are facing. To verify your plan subscription, please ensure that you have connected your website using the correct account. You can check this by going to the Websites section inside your Rank Math account area. If your website is not shown there or if you see a message indicating No connected websites found, it means your website is not connected to your Rank Math account.
You can reconnect your website by navigating to WordPress Dashboard → Rank Math SEO → Dashboard → Help. If it shows as connected, choose Disconnect Account and then reconnect it with the correct Rank Math account associated with your PRO license.
For further assistance, please reply to this ticket, and a human agent from our support team will take over and help you with the verification of your subscription.
Thank you for raising this concern!
Sources:
How to Ensure Your Account Has an Active Subscription » Rank Math
How To Effectively & Efficiently Get Support from Rank Math (Support Tickets) » Rank Math