Thanks, I didnt notice the space in the key! Now it works, but when starting DBD, I get an Initialization Error and cant enter the game.
I updated the Fiddler Script, and also reset the Fiddler certificates, but no success.
I use BloodWeb, MarketWithPerks, PlayerLevel and GetAll files from the Files the Updater generated.
EDIT:
It works! I had to rename the Market.json in Fiddler to MarketWithPerks.json.