Working Buttons with Animations

I am having problems with button I have created. I followed the tutorial from the link in this Topic to a T and the first button works just fine, but when I try to make a second button either by duplicating or creating it again from scratch the first button stops working and this continues as I add more buttons accordingly. Does anyone have a solution? This is for a school project for a foundation.
Button Tutorial Link: Push A Button To Do Whatever You Like - Unreal Engine 4 Tutorial - YouTube