I recognized, that the FSB ist not working/displayed in my posts at all.
All settings should be correct. Checkbox for posts is active in settings of plugin and the 'hide' checkbox in post settings is unchecked.
My search of past topics showed me:
Is this an issue, still??
I am using WP3.9.1 with FSB 1.1.5 and WP-SEO/Yoast 22.214.171.124
I appreciate any feedback and input.