Yes, that is true, there is the CORS notification: Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://hispanistik.uni-trier.de/omp-1.2.0/lib/pkp/fonts/fontawesome/fontawesome-webfont.woff2?v=4.3.0. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).
But why is the old URL there? 