i have complained about this a few times im still waiting on my so called 36 hour response from support that was nearly a week ago still no answer. the main problem is you must have the new update version 95 you can check your version by clicking on credits and it will tell you down the bottom what version you have. My prob is i still have version 94 appartently when you close the game and re-open it it is surpose to update but mine hasnt im still on version 94. So my score stopped updating around level 5.
Now a few people said replay a few levels which i did, i started again around level 3 and it started updating score again so im still playing the other rounds again to see what happens.
hope this has helped.

well if your like me i have been searching to find out how this update works because i have closed the game and re-opened half a dozen times over the last few days and still no update still is version 94 in credits. waiting on pf response but im going to guess they will tell me to close and re-open.! my score hasnt updates since level 4.10 and i have replayed levels, re-installed and nothing.