Doesn’t sync!!!

HELP! I just plunked down money for this app, and I like it, with the exception that my info on my iphone calendar DID NOT sync with this. ANyone have any suggestions. I tried powering down both devices and powering back up. Would seem to defeat the purpose if I have to manually go in and input info that has already been added onto my iphone calendar. Help!!!

Rosebud Roses about Planner Plus - Daily Schedule, Task Manager & Personal Organizer