Anyway is your call. If I tell you that is a network issue that could be either your connection to the server or the server connecting to the world. I know this system backwards and ask anyone, I know everything about make it work and we have websites with one image hosted and websites that host millions of images.
You are free to install the system in any server you want and give it a second shot or just forget all the thing. There are more than 3,500 clients with near to 5,000 installations out there so I hope you join us in the future. Your license is lifetime perhaps in some time you can come back and find that the system is complete different and packed with more cool features. Guess what, it will be free for you to download and use it.
If you need help to make it work in a different server or the same server I can give you a complete detail of the things that you (or the server administrator) needs to be care of.
Cheers.