Alex

I FOUND THE ISSUE!

So WC Status warned that the HTTPS is not active for the Shop.
But all was fine. After taking the time and deactivating ALL plugins and switched the Theme to the basic one, reactivated WC the status showed a green mark ??
After reactivating every plugin and checked the https status i found a plugin called “make paths relative” that caused the error.
PPP was not working because of this (secured, but internat unsecured) connection and https error (but there wasnt really an error, just no https inside the link, that what confuses Woocommerce!

Solution:
Deactivated the “Page Permalinks” in the settings:
Plugin “MAKE PATHS RELATIVE”

Shoot this to woocommerce, this might be not a real issue but since WC doesnt find the HTTPS it shows that error…
??

Wish all of you a blessed Day!

Already done and checked in the WP general settings as well as in the wpconfig and htaccess.
This looks all good. i tried deactivating cache plugins and optimization plugins without success – doesnt work…
And I contacted paypal via paypal plus support because their plugin doesnt work and the dev there said i should ask here, he can help only with the plugin itself.
The PP support told me it must be an issue in woocommerce or wordpress or in its settings.

Thank you for your answer and quick response.
I will send you the information.