Not sure how to advance further
I'm not sure if this is the right place to post about this so please let me know if I should relocate. I'm currently at 301 stars, every discovered level has 3 stars and every area shows that I've discovered all their stars. I know many are hidden but I've seen players with a 370 star count and there's no way I've missed 69 stars in just over world levels. Transbegina shows levels yet to be unlocked but I have no idea how to trigger any sort of thing. Any advice? I'm in arena level 4 if that is of any significance. Thanks.