Hello,
Thank you for contacting us and we regret the inconvenience caused.
Depending upon the editor/page builder you’re using, the position of the SEO Meta Box can vary. Please follow this guide and see if you’re able to locate the SEO Meta Box: https://rankmath.com/kb/seo-meta-tags/
If not, please ensure that you’ve enabled the Add SEO Controls option from your WordPress admin area > Rank Math > Titles & Meta > Posts > Add SEO Controls.

Once done, please check if the issue is fixed.
Let us know how that goes.
Thank you.
Actually I found the reason is that I used advanced custom fields pro plugin – this is rank math’s confliction. However, when I stop that one, my website get serious fault, which prevented me from using rank math anymore. Do you have any suggestion or can we contact this conversation via email. I will appreciate your team a lot. I have not used rank math before and intend to be a loyal customer of rank math pro after hearing my friend’s compliment, you know ^^
Hello,
Please make sure that you are using the latest version of the ACF Pro and Rank Math. https://rankmath.com/changelog/
The issue usually happens when ACF Pro isn’t updated to the latest version.
Let us know how that goes. Looking forward to helping you.
Thanks.
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.