Refreshing a quiz in ppt

I created a microsite for kids in ppt - one link goes to a short quiz. Once finished they can go off and explore the other pages - but if they go back to try the quiz again, it shows the end 'Well done!' page of the quiz. I tried inserting a dummy slide before the quiz which transitions automatically - which I view that this might trigger the quiz to refresh. Any ideas or tips?

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Thank you for posting here!
I am sorry that you have run into this inconvenience!
However, the quiz can not be refreshed within one session. The presentation should be closed and re-launched to take the quiz once again if several attempts are allowed.
Thank you for your understanding!

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Thank you for this post.

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