Good App, Bad App

It worked fine, until it didnt. Stopped notifying me new mail arrived and marked all mail as read (which, when you receive 500+ e-mails/day is not good).
Constant issues with syncing the PC Outlook Calendar with the Outlook App - some events are updated and some not.
Contacts appear from unknown source, and cannot be modified and deleted.
Otherwise, not a bad App, if they could only make it work. :(

Бориша about Microsoft Outlook, v2.4.3