Resin not curing

Hi, I'am printing with anycubic's high clear resin and my prints are very Hard to cure. After like 15minutes in the curing station they are still very sticky and i'am able to leave fingerprints in the surface. I'am curing them unwashed because after washing they turn very opaque.

I was able to cure one washed piece when i placed it below UV nail lamp for like 2 hours. Why is it not curing? Printer is Creality Halot one.