Unable to edit anything on cattools

hi,

i'm trying to manage a CatTools but when i'm in the UI i can't edit anything.

every entry in the menu are unavaiable; if i right-click on a device in the list i can't select any of add,remove,edit,... .
the activity still running and the configuration backup working but i'm unable to add new device or activity.

in the menu about i can see the license mantenance plan expired by 584 days and the version of cattools is 3.3.14 edition professional.

anyone can help me?

thanks in advance
Francesco