I can install and setup the plugin properly. My interest is to restrict user groups view, so I configure a widget as dynamic.
Nevertheless widget can be saw by all users. (Tested with all plugins turned off)
To test this issue I install wordpress, theme and plugins in another domain and hosting server. ¡Plugin works perfectly!
Is possible that the plugin can be affected by hosting server settings? How to fix it?
Where it does't work: http://www.alternativa-abierta.org/square
Where it is working ok: edumatica.es/pruebas
If you need I can give you access control.
Thanks and Best Regards.