VW Routan air conditioning problem

Hello all, I am very bad at German. I want to continue in English. If someone out there understands my situation, please reply in German. I recently bought VW Routan SE 2010 model and i see that i have issues with AC. I am getting Air, but not cold air. I took to a garage to get it repaired and they said that this car has US adapter(Pic attached) and cant be done. What does this adapter mean and is there anything like converter?? and how can i fix my issues?? d that if anyone will repair my car??Please recommend any garage in and around Munich (radius 200 kms) who repairs US imported cars. Thanks Krishna