Hello,
Thanks for contacting us and sorry for any inconvenience that might have been caused due to that.
I checked and figured out that the issue is being caused by the Duplicate Page plugin. If you disable the plugin then the SEO meta box works fine. Please contact the support of the plugin and inform them about the issue. They will be able to resolve this on their end.
Let us know how that goes. Looking forward to your update.
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.