Amine blush is invisable and is just an oily surface that appears. It's usually not extreme and sometimes not even noticable. It's like a waxy surface on a window where you could drag you finger and see the mark. It is water soluable and some epoxies recommend using a little Amonia with water for clean up. It will interfere with the next coat of epoxy however.

I sounds like you have un cured epoxy. Many times epoxy will cure from the inside out. I have experienced that. Put it in the sun or heat for a day or two. If you can clean the surface with laquor thinner or acitone, - it's epoxy.

What epoxy did you use? Did you give it enough time and temperature? You can always contact the manufacturer.