Marrying a Norwegian

I need some information regarding the paperwork needed for marrying. I'm German and have a permanent right of residence here in Norway. Now I want to marry my fiancé and I know I need a "Ehefähigkeitszeugnis" from Germany to do so. I am asking if there a some German here in the group who got married to a Norwegian and what paperwork was needed to get that "Ehefähigkeitszeugnis". I already contacted the Standesamt in Germany .. in the municipality of my last residence in Germany... but to be blunt... German administration offices are so damn slow to answers inquiries that I possibly have to wait months til I get an overview of all the required documents. Can somebody help out with some information. I could find some information in the internet but no info regarding what papers are needed from my fiancé if any. Thank you for the help. 😊😊😊😊