Sprite Stuck on Screen

So in my platformer game the level changes as you complete and with layers that’s where I will make the changes. I assign the platform and etc to a the layer but those platforms are stuck on the screen. Could someone help? Thank you.

you can hide a layer, but the objects remain active whether they aren’t visible. you can apply some kind of a state machine to disable all unwanted objects, but better practise to use different scenes for every levels.