OAuth Not Working

Hello,

When I use "Resource Owner Password Credentials" for OAuth, it doesn't work and gives me the error "The provider is not responding as expected. Check the application settings are correct and you have registered the correct Redirect URI." error instead.

The response from the API endpoint looks like this and I can confirm that the forum is accessing my API.

Quote

{"access_token":"aaaa","token_type":"Bearer","expires_in":36000}