The QT Wallet takes a while to discover peers to connect to. It took me 4 hours for it to get enough connections (max. was 16) and sync the blockchain from December 17 to today. The Android wallet obviously has issues - it doesn't get any peers and no blockchain sync happens, so the coins sent to a wallet address of the Android app are now lost, because the app never shows them as received. Also it should be possible to import the Android wallet .txt file into the QT client. Right now the Android app is unusable.