When I have a few students who run out of time while taking a Canvas quiz I try to go into the moderate tab to reopen it for them & give them additional time (versus making them start completely over with a new attempt). What ends up happening is that I hit reopen and provide additional time but when the student goes to reenter the quiz it closes it again without giving them the additional time.

I know that I can just give an additional attempt but it seems like it should work to hit reopen and provide additional time.