Authentication header missing

No Authorization header detected with your request.

Error Message	`Authentication header missing.`
Error Code	`authentication_missing`
Status Code	`403`

Common causes

You didn't include an Authorization header with your request.
There may be a proxy between you and Paddle that's removing the Authorization header.

Use Bearer authentication when making requests to the Paddle API.
Make sure that any proxies in use don't remove or change the Authorization header.