The extension MB Yoast SEO Integration only works with single fields (not in a Group or a Block). We are trying to make it works with Group and Block in the future update.
This is indeed very important to me as all my websites are now completely built with custom blocks and groups and my clients are asking for Yoast SEO support which I can't provide.
Thanks for the continued support, I'll make them wait for the next update !
Any updates on these issues ? My clients are prompting regularly on this and it is becoming quite problematic for them to not be able to have their page content analyzed by Yoast SEO...