Test case fails with HTTP 405 response

I tried running the test, with my credentials set as environment variables.
It fails at the 1) login step. When inspecting the response, I get:

> url: https://www.humblebundle.com/login
> status: 405
> statusText: 'Method Not Allowed'

Start with the login test and its environment-variable credential setup, then reproduce the request to https://www.humblebundle.com/login and inspect the 405 response. The issue does not name a file or expected change, so first clarify the intended login behavior; done means the test reaches the login step successfully or documents the required update.

Written by the indexing model from the issue text.