worked fine at first, then after my firstpiece of work was graded the app stopped updating. I checked for an update there was not one. I restarted my phone - no change. I cleaned my cache - no change. I Uninstalled the app and reinstalled it and now I no longer have access to the app (you no longer have access to this domain). It refused to let me log in. But I can still log in through my phone, laptop and tablet browsers. There is clearly some kind of issue with the app. Please address it.