You probably have hearts for main now. Did you " Join the competition " ? You would go to the round page when in the main lobby. In the upper left corner there will be a red separated tab that says " Join Competition " CLICK THAT . you must do that every round to join the round.. otherwise your wins do not count in the competition. It happened to me. If it says you can not join then you will have to wait and join the next one. Start playing asap though.
Heya! I already posted this up on the lobby but incase you miss it il say it again on here :) You no longer need Karma to get into comp/main lobby, it only requires 2000 points! But ive plussed Ked anyways since your Asian and very kawaii ^_^