I am using Canvas for an online training course and Ive had over 5 students get locked out of their canvas accounts because all of a sudden Canvas says their passwords are incorrect when they type them in exactly correct and never changed them. I have seen this problem with my own account, I am logged in on my account with my correct password, but if I try to login on a new device with the same exact case sensitive password, it tells me my password is incorrect. When you request to reset your password the reset link never sends. I dont know if this is a recent bug with the site or what but its very frustrating.