I have had a few complaints from students that they get to the end of the assignment and there is no "next" button, is there any reason why this might occur. When I check the logs I can see that they have launched the assignment but it gives no grade and shows no attempts.
On other occasions they finish and pass but the grade page won't update and so it still shows no grade. I have had students send me a copy of the certificate that shows they pass and still not had an updated grade on their profile.
I tried to turn on debugging but I don't think I have permission because when I save the page it switches back to no debugging messages.