How to logout the user from main domain and subdomain in ReactJs

I’m building a react app where users get a subdomain on signup and when users log in or sign up on the main domain, I save their profile data to local storage and redirect them to their subdomain along with the token. I encode user profile data in this token like name, and username. When users get redirected to their subdomain, I decode the token and save the user data to the local storage for the subdomain so that I can access the logged-in user data from the subdomain. I am redirecting the user like this:

 window.location.href = `http://${data?.result?.username}.localhost:3000?token=${data?.token}`;

But right now, what happens is when a user logs out from the subdomain but it doesn’t log out from the main domain. I would like to know how I can log out a user from the main as well as the subdomain. I delete the user data from the local storage when a user clicks on the log out.

sign in code:

export const signin = (formData) => async (dispatch) => {
  try {
    // login the user
    const { data } = await api.signIn(formData);
    await dispatch({ type: "AUTH", data });
    window.location.href = `http://${data?.result?.username}.localhost:3000?token=${data?.token}`;
  } catch (error) {
    dispatch({ type: "ERROR", data: error?.response?.data });
  }
};

Reducer code:

const authReducer = (state = { authData: user }, action) => {
  switch (action.type) {
    case "AUTH":
      localStorage.setItem("profile", JSON.stringify({ ...action?.data }));
      return { ...state, authData: action?.data };
    case "LOGOUT":
      localStorage.clear();
      return { ...state, authData: null };
    default:
      return state;
  }
};

log out code:

const logout = () => {
    dispatch({ type: "LOGOUT" });
    history.push("/");
  };

Hello!

Why can’t you just call the endpoint where the user logs out of the main domain?