I'm learning rtk and both methods return a root reducer. I'm confused when to use which?

I am working on a new React project using Redux Toolkit Everything works perfectly — my reducer updates the state and the data is added to the store as expected.

But when I open Redux DevTools, it still shows theold store details from my previous project (like the old slice names and actions). My current store has a new reducer connection but DevTools does not display it instead it keeps showing the previous one.

I have double checked that my app is wrapped with the new<Provider> and that I’m importing the correct store. The app works fine only DevTools seems stuck with the old instance.

Has anyone else faced this issue? Is there a way to reset or clear the DevTools cache so it connects to my new Redux store instead of the old one?

I have named my slice name "test", but in the Redux Dev tab, the state's name is turned into "tester" instead of "test". Why does this happen? When I console log "state.test.value", it says state.test does not exist, but state.tester does.

Any guidance will help, please and thank you .