I was using the Canvas App and my assignment sublmission disappeared, what happened?
At this time the Office of Educational Technology does not support nor recommend the use of the Canvas App. It has been known to cause issues that will cause you and your instructors frustration with class assignments and grades.
For example, we have experienced students who submitted assignments that the instructor cannot see and quizzes in which the student cannot participate as the App has closed the attempts. We do recommend that you log into the Portal and then access Canvas using the browser of your choice, like Chrome or Safari on the device of your choice.
Please make sure your device and your browser are up-to-date as this can also cause issues.
Further questions about browser and device compatibility, we suggest you read this: Canvas Guide.