Opel Adam Moisture Problem and Sinters in Air Conditioning

Hello together, I have a problem with my Opel Adam (120 years edition, 87 hp), which is now just a good year old. Especially in the current time, where it is particularly cold, my windscreen is not only wet in the morning, but really wet. I recently needed a large pile of Zewa to be able to drive the car at all. Basically I always drive with activated air conditioning, that should normally also dehumidify the car. The first reason is that the disc is dirty every time from the inside, and because it can’t be good for the car in the long run. I recently brought the car to my Opel dealer, but it could not be found a mistake on the car. The car was probably also blasted off with a steam radiator and stood there overnight. Unfortunately, I can’t quite believe all this, since the problem is still there and with minus Temperatu The other problem with the car is that in the course of a ride there is a buzz in the air conditioning system. I have already read over here in other forums that in this problem the whole ventilation unit had to be replaced. The noise could not be determined by the dealer either, since this does not always occur as said, but usually develops during the journey. we didn’t want to help much, because the mechanic probably has “unpaid diagnostic hours”. Does anyone have an idea here, where the problems could come from, whether these relationships or has someone ever had a similar problem? Thank you and LG