When I was trying the quiz in week 1 for the second time, I was distracted by other issues and did not close the quiz page and it timed out. Now when I retried the quiz, I cannot even click on the quiz choices anymore, and the page indicated that the time slot for the questions are timed out. I tried to close the tab and open the quiz again, everything is still the same. Can anyone help on this?

The clock will not reset until you submit the quiz for grading. Then you can try again.