Problem with planner

I absolutely love this app, but since updating to version 4, I'm having a major problem. When I'm typing my lesson plans in the planner, I often press "done" and my text is deleted. It's so frustrating to lose everything and have to re-type it. This never happened to me before this version. I'm not leaving the app at all when typing out my lessons. It seems to happen when I have one of the planner windows open for a long time.

It shouldn't happen at all. If you have a chance, send us a quick backup (support at iDoceo.net) and we'll give it a look.
From your Dropbox account: Apps / iDoceo folder

If you can provide any additional details we'll try to reproduce it on our side

Which iOS version are you working with?