After answering the form, hit the line with "enregistrer vos réponses" written in blue at the end of the list of questions to validate it. If you don't answer all, it will not be validate and you'll have a message ending with "fermer", that means you need to redo it! ;)
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Question 1
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Question 2
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Question 3
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Question 4
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Question 5
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Question 6
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Question 7
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Question 8
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Question 9
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Question 10
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Question 11
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Question 12
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Question 13
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Question 14
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Question 15
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Question 16