Allowing request through cloudflare access for GraphQL endpoints

I’m not really sure where the problem is but, we’ve done the setup for other internal applications and all works good until we came to some of our applications that use graphql endpoints to expose our app to frontend developers. Accessing the playground works but loading any query or mutation gives the error forbidden. Or simply loading the playground gives the - “error”: “NetworkError when attempting to fetch resource.”
Does Cloudflare support Graphql endpoints/playground access? I’m I doing something wrong?