Events+ Upcoming Events Widget, Categories??

Hello,

I am using events+ on my site (love it), but for some reason the 'Upcoming Events' widget will not display ALL event categories. The categories drop-down selector in the widget settings only shows 14 categories---I have a few more than that and would like to be able to display them with an upcoming events widget. Any way to manipulate the widget to display more than 14 categories??

Thanks,