Pages are swapped and mixed

since the WP update from 2 days ago, I have a strange mix/ swap of a regular page and a post.
The orginal page addvise.net/contact show the correct breadcrumb [slug is ok] but the content is of a recently published post.
I checked slug and tags. reinstalled WP. Redone HT access, republished the contact page. Checked the build up of the menu

so far no luck