While I do always recommend not putting the Protocol in either the Base Page or
in the Filter....

This one (ans a few others) doesn't like the http/https conversion step. So
the Base page needs to have the https

Use for your base page
<https://www.cafe-rosenow.de>

Use these rules:
-*
+*cafe-rosenow.de/*
+u.jimcdn.com/*
+assets*.jimstatic.com/*
+image.jimcdn.com/*

Most of that site isn't on that site. Its on jimcdn.com, but as we don't want
the jimcdn.com site, I put only the specific sub sites that aren't likely to
have HTML or at least links to HTML on them as needed.

There is actually two asset servers which I simplified above 
+assets.jimstatic.com/*
+assets2.jimstatic.com/*

Hope that Helps