Help with API testing

Hello, I am currently trying out the OAuth 2.0 Sample App, and i have gone very far. I got the localhost running, but for some reason, when I try going to localhost 3000, it says that I need to enable a certain option,

Scope not allowed for this application: universe-messaging-service

Which if I turn on it works, but then it wants to access games from the user too, which I dont want. I only want the api to access their profile, but otherwise it wont let me go in and will just say that I need to turn it on.
I have also tried running it while I have ngon turned on and changed the redirect URL to the ngon one, but then it says invaled URL even tho it is VERY VERY valid and I know it for sure.
Please help.