Hello, the white roller Enje is nice - unpleasant is that the narrow safety notice glued to half a meter cannot be pulled off but must be pinched off cm by cm. Intense.
I don't have the blind, but as far as I understand, the stupid sticker is on an aluminum part (not on the fabric). If that's the case, then try using regular salad oil. Dab a lot on a paper towel, let it soak in, and then wipe it off. Regards