Hello @codeinjs
Thank you for your message.
If the cache date is from before adding the new metadata, then you just have to wait for Google to re-crawl and re-index the page with the new info. If the date is after you made the changes, then you just have to wait it out and there is no further input needed from your end.
Do note that if everything’s fine and Google still decides to show a different meta title/description for your search keyword, there is nothing you can do as Google sometimes ignores the custom meta info altogether and show something from the page’s content that matches the search intent better.
Also, you can try to submit the URL manually in Google Search Console.
With that said, we request you to please open a new support topic if you need further assistance:
https://www.ads-software.com/support/plugin/seo-by-rank-math/#new-topic-0
Looking forward to helping you. Thank you.