Hello, welcome to the Community @pamela56 . The pieces of the Supersonic Lolly have a timer. So if you don’t find in time a second and/or third piece you see a piece is disappearing. We have a main thread HERE where you can give feedback.
I have never been able to collect all 3! Frustrated!! Get 1 or 2 keep advancing then there aren't anymore they disappears. another on a timer but if I continue going through the levels non-stop and then never get another third piece