Dear Kelly,
We are sorry to hear that you are having issues with your toilet phantom flushing and would like the opportunity to get it fixed for you. Please try this solution:
You will need to remove the black wing nut and lift off the green dome. Replace the blue seal. When putting the green dome back into place, be sure to line up the four slots on the bottom of it with the four slots on the bottom half of the flush valve that is still in the tank If this still doesn't take care of the leak we would be happy to look into it further for you.
Sincerely,
AS Customer Care Tech Team