Gel top coat sticky after curing

Hi guys! 1st time gel mani kit user here. I used the set tonight for the 1st time & couldn’t ever really get the topcoat to cure. It was tacky for a while. Now it’s kind dry & not as tacky but the finish isn’t glossy on my nails.

Could my coats have been too thick? I really tried to wipe the brush thin for each coat of all the layers but the finish isn’t glossy.

Any suggestions?

Thanks!