Hello Sitham,
Thank you for your query.
Can you please test your website on GTMetrix as well to get a “second option” on the expires header issue?
If you see similar results to that of Rank Math SEO Analysis, please check the code and make sure it is working.
If you believe the alert is shown in error, please share your website link so we can check it for 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.