Old posts show green SEO, new one shows grey

Just created a new post at my Munich City Guide and under “Yoast SEO” in the posts section, everything is green apart from a couple of orange items, but under the list of posts they are all green except the latest post. You see my settings here The traffic light symbol is all grey
What could I have done wrong?

Regards
Drachsi

https://wordpress.org/plugins/wordpress-seo/