a hoax

On the second day it happened that the protection filter abbekam a few raindrops. So, I thought .... great, at least the lens is dry and then wanted to clean the "protective filters. Immediately I noticed that streaks formed. Since this is not going away, I tried my luck with an optical cleaning cloth, but what then the end for the "protective filters" meant. The streaks were not mop, the filter looked discolored.
This may not be a protective filter for the life ................ goods goes back definitely.