Hi Fosan,
Yes, the load quiz button can be used for previously incomplete quiz.
How the add-on works for login users:
1) login and take quiz.
2) Do not submit quiz, logout and clear history
3) login and go back to same quiz. Click on load quiz button.
4) You will be able to load the quiz from where you left it. Submit the quiz and see the results.
How the add-on works for random non-login user:
1) Take the quiz halfway.
2) Click on Save Quiz and copy the session id
3) re-load quiz and see the “Do you want to resume quiz?” popup.
4) Click on Yes and you will be able to continue the quiz where you left it.
5) Clear browser history and revisit the quiz. Click on load quiz button and enter session id.
6) You will be able to continue from where you left the quiz.
7) Finish it and submit quiz.
Hope this helped you with the query.
Regards,
Kriti
.