I have a student that is unable to submit any assignments in any format on an iPad. For example, she was trying to submit an essay created in Google Docs. When she hits Turn in and then selects the file, she hits the submit button and then receives an error message that the submission failed (CKCanvasErrorDomain error 401). I tried to submit it as a Word document, a PDF, a URL, even tried to submit it as a snapshot (but Canvas wasn't even a sharing option). Does anyone have any idea how to get around this, other than having her go to a computer to submit her work. Our school is 1:1 iPads this year and submitting assignments has been a constant issue. Thanks for any suggestions.