Reports causes lock-up

I really like the concept of this app in that I think it can be very helpful to keep focused on a task until the timer runs out. You break work into a time chunk that you define (default is 25 minutes, and it’s simple to change the default).
I’ve got what I’d call a P1 problem right now though - when I click the cogwheel and select ‘reports’, the app seems to lock up.
I’m running on a MacBook Pro 15 inch with El Capitan (10.11.1).

StoneHouseInformation about Be Focused Pro - Focus Timer, v1.1