If you hit that URL (with the right parameters) from the browser, does it work?
Yes, I created another php script, that calls one of the same functions and it doesn't have any errors.
Several months ago I also updated the timeout on the services to 120. Perhaps that is not enough anymore?
Unless I'm not understanding your scenario, another .php file isn't a test of the problem area.
But anyway, ignore my suggestion of using the browser, but it finally clicked that you are using NetConnection. If it is the timeout, Charles should show no response from the server and then you will need to look at your server side.
Looks like it started working again today. It was probably a Godaddy issue which I assumed and they wouldn't admit to.