Android version: 4.4.2
Device: Dell Venue 8 Android
After the latest update, 2016.08.26.901, the application appears to have reset itself back to a state of no account setup.  I have tried to sync the account back to the Dropbox database and it only sends me back to the home window.  I tried setting up a new account with the same results.  I have un-installed the app and re-installed and it will not show Dropbox or any other source when configuring synchronization.  I have the same app and version on my Android 4.4.4 phone with no problems.