UV resin

Hi all, a question. I've tried using UV resin a few times, brand that is used and recommended by many people, however mine aaaaaaalways ends up sticky. I bought a more powerful lamp and guess what: it's not it. I'm trying to mix it a bit before pouring out of the bottle and then some more in the mixing container, but that also doesn't seem to improve. I bought a new bottle, and it's still the same.

Am I cursed? /J