Cloudflare tunnel, API access to the internal application

So I have this internal app with a UI, that people can access with cloudflare HTTP tunnel, and use their email to login.

We need to allow API requests against this internal app, so I created a Zero trust > Access > "Service Auth" token. I put the headers given by Cloudflare in postman, and test the request, but hit the cloudflare "Sign in ・ Cloudflare Access" HTML page.

After re-reading the documentation, I find out that in Zero trust > Access > Applications, I need to add another policy to my Application:
  • one for the user emails with SSO login, action "allow", ending with @myorg.com (the default, for users.)
  • one for the API, I select the action "Service Auth", and include a rule to allow any Access service token. (the new one I added)
I still cannot do a postman query and hit "Sign in ・ Cloudflare Access" HTML page. Any idea what am I missing? What I could be doing wrong?
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