I have spent the last couple hours trying to resolve this issue using many of the discussions started here, but with no luck.  Here's the problem:

I have a map that I created on AGOL.  It references map services that we have locally.  The path to these services all start with "http://durham...."  That doesn't seem to be a problem for the map or an application I built on AGOL that uses that map.  I can see all the data.

However, I wanted to customize the widgets and the general look of the map so I downloaded WAB for Developers.  When I click the startup.bat file the command window opens and everything looks good.  It also opens a new tab in Chrome with the header Welcome to Web App Builder. It lists an application I created so I could get an AppID and allows me to select Edit.   But, it never successfully loads the application.  Well, it loads the basemap, but not the map I created and the Console has several errors that seem to indicate that requests for the map services are blocked "because the content must be served over HTTPS."

I read at least one discussion that indicated I could address this problem by changing the url in the signininfo.json and config.json files.  I did that, but it doesn't seem to have made any difference.  (Here's the link to the thread: Do I need HTTPS to run Web AppBuilder deployed apps? )

Thanks for any help folks can provide.  My apologies if I've not been entirely clear.  This is my first time posting.

Sean