My resin will not cure

Hi everyone, how are you? I hope you are doing good!

I am trying to make keychains in a star shaped mold with my art cut into the shape of the mold and my art is laminated so the picture won’t get ruined. However, it has not been curing at all and I’ve tried the whole crock pot trick and that didn’t work. I added a little more hardener to it but ended up getting bubbles again, so had to scrap the top little bit out. Anyone have any tips for me? The mold is silicone and flexible. I am mixing the resin slowly and carefully so that is not an issue.
I wish for someone to help me figure out how to speed the curing up since it has been 2 full days and nada.