Please install the workaround app before you upgrade if you're using Android 4.4 (see the app description). Also, please contact us if something doesn't work as expected.
new in 1.8.9:
more authentication fixes
new in 1.8.8:
fix some authentication issues
fix one-way-sync setting being disabled
new in 1.8.7:
add workaround for broken devices that are missing a specific database column
new in 1.8.6:
more authentication improvements
fix synced calendar selection
improve webcal sync