Application cannot login into corporate version with a basic user and no ssl

My customer has a corporate version of milestone with SSL turned off. The application is trying to login this URL:

http://xxx.xxx.xxx.xxx//ManagementServer/ServerCommandService.svc

Using a basic user. We are getting an http status of 415. The error:

status: 415,

statusText: “Cannot process the message because the content type ‘text/xml; charset=utf-8;’ was not the expected type ‘application/soap+xml; charset=utf-8’.”,

I attached a table that specifies what URL to use when - it does not seem to specific the URL for http, corporate version and basic user. What are we doing wrong?

Using NTLM you can login on http

Using basic user requires you to login using https / SSL

This is what the table should tell you, I am sorry this is not clear.