I want my site's content to be multi-lingual. I have a language switcher that can toggle between both the English and Spanish translations of a page. I want the administrative interface to always be in English, no matter whether you navigate to it from a Spanish or English translation of the page.
Here is my configuration at /admin/config/regional/language/detection:
Here is my configuration at user/1/edit:
My admin interface is always in English, but now my content is also always in English, no matter if I toggle the page to Spanish.
I have tried many settings, including the settings in Content language detection.
What is the correct configuration to achieve this?