@jen Thanks a lot for your replay and the provided information.
I was following this guide and my netlify-cms files looks like the following:
auth_type: implicit # Required for implicit grant
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<!-- Include the script that builds the page and powers Netlify CMS -->
I was not aware of the
This is what the browser’s developer tools report: