What is the Box.com configuration setting to allow non-service accounts to use the API?

I have my box.com app set up with the following permissions:

My security settings for application

admin console -> business settings -> apps -> (under actions) -> click on ellipses of your app -> view app authorization

Yet Right now, I get the error message described in this issue:

"BoxOAuthException: {"error":"invalid_request","error_description":"Cannot obtain token based on the enterprise configuration for your app"}"

--> Box API token request enterprise configuration issue

What is the Box.com configuration setting to allow non-service accounts to use the api?

In your app, you can go to the section "User Access" and set it to "All Users"

All existing app authorizations now need to be reauthorized.

To do this... admin console -> business settings -> apps -> (under actions) -> click on ellipses of your app -> view app authorization

Notice in the below you might see "only app users can use app"

If so... Reauthorize the app admin console -> business settings -> apps -> (under actions) -> click on ellipses of your app -> reauthorize

It should now say "All users can connect."