The game is superb with so many levels and contents but the support team is the worst. I would have given a 5 star rating for the fun experience but I'm giving 2 stars because the support team didn't help me out. I collected many boosters over a long time and then when I changed my device (I logged in with Facebook in both devices) I got my levels progress back but lost all of my boosters. I wrote a mail to them twice but they still didn't resolve my issue.