I’ve played and won this level 3 times why am I not moving to next level
You are at the end of the game! Congratulations! Will there be more? We don’t know! 
Oh no, but thanks for your reply
There are also 800 expert levels that follow the last island.
How do I get to them. It keeps taking me back to redo that level
Click on islands. Scroll all the way to the right. You will see a tile called Expert Levels. Click on it. I hope it helps.
Thank you, that helps