Hello,
Thank you for getting in touch with us.
This is likely an issue with your theme homepage layout especially since you have set your homepage to show the latest posts.
If you want to have a specific page for your homepage, please head to WordPress dashboard > Settings > Reading and set your homepage to static then select your specific page as the homepage page.
P.s. Rank math does not add the featured image to your pages or posts.
Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.
Sir my problem is not solving. Please check this article.
https://www.thecharmingbesties.in/2021/01/31/full-plumbing-services/
Check this post, in this post feature image is not showing sir
Hello,
Thank you for keeping in touch with us.
Upon checking the link you shared on my end, it looks like the featured image was displayed as intended. Please see this screenshot:

I also checked the HTML code related to the image and it is mentioning “featured” so I can assume this is the featured image displayed.
If it still seems I am missing something, sharing a screencast from your end would save us all the time in trying to replicate the issue.
Also, If you don’t mind me asking, have you had the chance to try clearing your computer cache, cookies and hosted app data? In addition to trying another browser? I find that I personally need to action this every few weeks since the data that loads up onto your web browser – can often cause delays or errors with this.
We are looking forward to helping 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.