I am having the same problem.
I have the same problem on http://mountainsangha.org/latest-posts/. What can we do to get this fixed?
I think this plug in is frakking busted.
I have the same problem, but I may know part of what is going on.
If you look on my main page, my latest posts in their respective categories appear.
If you look on my mobile main page, it shows the next posts in each category, if there are any.
If the option to “Allow duplicate posts” is enabled, my “mobile” page does not show the latest posts. If I disable this option, the latest posts are displayed.
It looks like the plugin is no longer being developed, so I may play around with the code until I can find a solution, then publish it or something.
Let me know if this helps!
For some reason now when I visit my site on my cell phone with the mobile theme enabled, everything is working fine now.
There haven’t been any updates and I haven’t changed any code (yet), so I have no idea why, but apparently it is possible that this plugin could work just fine with mobile themes. :_)