Why did Bunk'd continue after the Ross kids left?

I don't understand why didn't they cancel the series after Emma, Ravi, and Zuri's actors left? It was suppose to be a spinoff of Jessie so it made no sense for it to continue after they left. The only one that stayed was Lou. Season 1 introduced Tiffany, Xander, Jorge, and Hazel.

Season 2 introduced Finn, Matteo, and Destiny. They stayed Season 3 introduced Gwen and Noah and so on.