Help needed with multi-answer activity

Good morning! I am working on an activity which has multiple correct answers. According to the attached slide, #1, 3, 4, 5, and 6 are all correct responses. When the user does not select all of the correct responses, a box pops up that says "That's not correct. Click Continue to try again." However, when they click that and the slide layer disappears and goes back to the base layer, I'm not able to click on any of the boxes to try again. Is there any way to make the base layer go back to its initial state after they have clicked Submit the first time? Help!

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