Method_not_allowed for folder items and shared link

Hello.

I'm fairly new to the dev community of box. I've been successful at creating folders using the API through an app, but I cannot get the folder's items.

Using my token I can create a folder and sub folders.

When I try this syntax: /folders/0/items

in my call, I get the "method_not_allowed" response. This also happens for the shared_link call.

Please help. I'm not sure what I'm doing wrong.

Thanks