Particle effect works in editor but not play window

i am attempting to create an emitter that fires an object to the side in a little big planetesk game for a school assignment and have gotten it to about how i want in it in the editor window after following ue4’s tutorial on making emitters but when i click the play button and reach that part of my level they dont emit at all, and as a secondary question as i cant seem to figure this one out is the a way to make it so if it collides with my player character it runs my blueprint to send him back to the last checkpoint