Yes there is but this might depend on who you provider is. I too have noticed that the TV/Box On Demand choices for me and Comcast have slimmed down if not just plain gone away.
I just checked the HBO Go app on my smart phone (Dumb Operator) and Girls shows 5 seasons with 10 episodes. HBO GO is a Chromecast app also.
I also have noticed for a few years that there are viewing differences from the TV/Box or the web portal and that is for Comcast.
Hope that sheds some light.
Now back to your regular viewing.
ALan