Views Block Doesn't Show on Views Page
This sounds a little like it's due to your contextual settings. Not sure if you set these based on some info you found on the net, but the settings given online can lead to your view block not rendering content because you are currently looking at that exact content to begin with. 

The thought behind this is for example if you load a bunch of articles of the same content-type, that it will not list the same article in that list etc.

What you CAN try is to go into your views block (which is causing trouble) and under "advanced" set a simple "Global Text" under NO VIEW RESULTS BEHAVIOUR saying something like "Cannot load" or similar, to look if the block loads now with that message. If that is the case then the issue is more than likely in your contextual filters or in the field filter settings.