plug-in configuration

Last mounth the plug was ok
Now I can’t see the plug-in dashboard
I have an error when i enter in the plug-in configuration

Original message italian
Add Link to Facebook
Add Link to Facebook deve essere configurato
Solo questo utente potrà accedere alle impostazioni: (id=1)

english
Add Link to Facebook
Add Link to Facebook needs to be configured
Only this user can access the settings: (id = 1)

Any help
thanx

http://wordpress.org/extend/plugins/add-link-to-facebook/