Won’t sync with iCal

Help! I just bought this for all my devices (phone, iPad & Mac) and it WILL NOT sync with iCal.. I can’t even manually add anything because I get an error message saying “you can’t add or change events without a selected calendar.” but the darn thing won’t let me populate any calendars! Support is atrocious!

Jordan MK about Planner Plus - Daily Schedule, Task Manager & Personal Organizer