You also need to change the apiUrl values to point at your Ghost instance, in your case it would be your Ghost(Pro) subdomain so something like "https://xyz.ghost.io" (replacing xyz with your actual subdomain).
You also need to change the apiUrl values to point at your Ghost instance, in your case it would be your Ghost(Pro) subdomain so something like "https://xyz.ghost.io" (replacing xyz with your actual subdomain).