Looks like there's nothing after level 516

[Mario_1970]

The level 516 is just impossible: two seperates levels of dirts to destroy, wit a total of 14 rows, including a chain needing 35 purple jewels destroyed to start with and doom jewels... You would expect 60-70 moves to do this, well you have only 35!
So clearly the next levels are not ready yet and Team Lava leaves you stranded at 516 till they are.