Q: I have no problem streaming TV shows, movies, Netflix, YouTube,  everything except HBO go. I start watching something and after a couple min.it pauses then it might continue or stop and give iTunes could not load content,try again later?

I've experienced that too from time to time. Sometimes it is a bandwith problem through the internet provider, other times it helps to restart the device completely and letting it reload.

I usually disconnect and unplug, wait about 30 seconds, and then plug everything back in. If that does not work try restoring the device. If that does not work, reset your modem and wireless router. To do that unplug the router and modem, wait about 30 seconds, plug the modem in first and let it completely start up, then plug in the router and let it completely start up, then power up the Apple TV.

I have the same problem. It has to be an issue with HBO's servers.