Your primer is not dry. It's that simple.
The coat was too heavy and was not dry under the top skin. When the paint coat wet on it loosened the top skin and the tacky primer caused your problem.
Follow the directions that Timber posted and you will be fine.
Don't ask me how I know this
BTW: Rattle can paint is self leveling and cwery forgiving. Sand your prime with 150 to 180 grit paper. If the prime does not sand off in "dust" but drags a bit on the paper; it is not dry! If no dust there will be no paint.
