Opmanager 8811 latest version is running on my server.

I meet the two following issues 

1- When I edit criteria for a notification profile for a server for exemple, uncheck every "threshold rule is violated" checkboxes and do next and save - My modifications are not saved and notifications continue to be fired in case of threshold violation - I see that first checkbox is unchecked but throught "selected" I can see that every threshold are checked. If I try to uncheck just one, modification is not saved neither. 

2- When I uncheck the notification profile through quick configuration wizard, result is the same, modifications are not saved. I supposed this is link to 1)

How can I change that since I prefer not to be alerted in case of threshold violation during night hours.

Thanks for your help

Best Regards,

sebastien