My IOS canvas app is v.8.1.0 right now and I opened the app to check my to do list and its not working the way it always has. I do not have the ability to remove things from my to do list and things that I have submitted already are not being removed from my to do list. I also have no notifications for assignments that are due. How do I get my to do list back to the way it was. I have already tried deleting the app and reinstalling it and that did not do anything.