I just playing this game then I have same this question too! 🖐️
Actually I am on level 890 on yesterday but now I am on level 875 after auto-update this game!
But don't worry, you are safe on your current level when you complete any new levels!
Community Team says we are safe on current level therefore we are moving back to previous levels! You can check it out for Jelly Jenny answer to me on March! (I have same question too) 😉