How do I fix the issue with white film on utensils in dishwashers? Is it okay to use dishwashers if water hardness is 900 ppm?
Most likely the problem is your water hardness. A few years ago, they removed phosphates from dishwater detergents. Since then, white films from calcium salts are a problem on glassware. Finish detergent (the little blocks with a red button) is excellent.

Try using white vinegar (or even CLR) to get rid of the film for a cycle or by hand. Use Finish detergent. Add some TSP (trisodium phosphate) with every load, which you can buy at a home improvement or paint store, and also use a rinse surfactant. Cross your fingers.