Yoast SEO is known to have issue with Lay Theme:
https://laytheme.com/troubleshooting.html#gridder-does-not-show-up
However some users reverted back to version 3.8.5 as they found Yoast working. If you would like an older version of Lay Theme to try out please email lostfiles@laytheme.com with your License key and link to this thread, a download can be provided to you.
Best wishes 🌻 Richard