Thank you for your continued patience as we fix this issue. Our devs have been working really hard. They've identified the problem and are now working on the fix. The problem occurs most often when you finish a chapter, quite the app, and then restart a chapter later - the way most of you play.
If all goes well, we hope to push an update out for Android later today. We are going to ask Apple to expedite an update, so we hope that gets released today, but depending on their testing, it may take a few extra days.
If you have encountered this problem, please let our Player Specialists know. To send us a message, tap the gear icon, tap Help, and tap Contact Us.