Hello Michael Tina,
Many thanks for the friendly and quick reply.
The problem has been resolved here, some automatic settings were implemented by the security plugin itself, which meant that not all functions were enabled for Yoast.
The thread can be closed.
Thanks.
Conflict check is performed as described in your video, the only active theme was the default theme and Yoast Seo was the only active plugin. The Yoast Seo tabs were still not active and no values were output. Neither in the general overviews, nor in the specific pages or posts.
It´s like the Problem in this former post:
https://wordpress.org/support/topic/yoast-seo-tabbing-is-not-working-and-conflicts-with-wp-bakery-plugin/
