On Feb 27, 2016, this plugin suddenly stopped working. It was working perfectly for weeks before but my Google Webmaster Tools shows a drop off of all schema data between 2/26 and 2/27.
The plugin is still installed. Also, I have this plugin installed on more than one site and it fails to produce output on the others as well.
Not sure what is going on here but I am unable to get schema output on any site where this plugin is enabled (I have also tried activating/deactivating, uninstall/reinstall).