Not SYNCING

This App worked fine until the iOS9 iPhone update. Now the App will not sync between my Macbook Air and iPhone. The App will not open on my laptop and I have sent several reports to Apple. The App on iPhone when opened continues trying to connect with iCloud to no avail. I have also contacted Apple Support which was not helpful.
My laptop and iPhone have the lastest updates.

LEM004 about Checkbook HD: Personal Finance