Dynamically setting request headers for stripity_stripe library

Questions & Help Questions
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2

Well omitting the hackney_options key when calling Stripe.API.request/5, and just putting the list of opts worked, i.e.
Stripe.API.request(params, :post, "tokens", %{}, ssl_options: [cacertfile: "/Users/apple/.ssh/CERT.pem"], proxy: System.get_env("PROXY_SANDBOX_BASE_URL"))

Hope it helps someone else.