Hi @landoweb,
i tried to undestand what’s the problem, and what that i can just undestand is that when i’m in a sub-site (in my case https://www.wegoo.it/mondiali-2014), when i click for to change scores for exemple or to modify some setting, the click always call back the installation in the mean site (in my case https://www.wegoo.it/wp-admin), if in the meansite the plugin is active you go to work in the meansite, if the plugin is off wordpress say “Insufficient permissions…etc etc” …
maybe just a problem of permalink structure in the plugin?
At the end now i’m working in the mean site!
I hope my indications can be useful to find a solution, cause it’s realy a great plugin!
Let me know please …
Stay tuned!!
Luca