Problem maybe?

I am playing and on lvl 158. Havent got any epic marks. When I kill a main boss sometimes a coin thing shows up and I click it but it doesnt show that I got it. I get a hammer on the top corner and thats it. Do I need to chronoshift first? I dont really get this game at all. Right now it says chronoshift for +12

Joe man sir five about Epic Dragon Clicker, v1.62