Mendix free certification vouchers (rapid,intermediate and advanced) question

Hello,   I’ve received this email from Mendix. I have one question, though.      I would like to know specifically in the case I use the voucher on may 31st will I have 1 more month to prepare and take the exam? or 31st of may is the last day I could take the exam as well. It is not clear to me and it’s important in the scope of planning. So is 31st of may the last day to use the voucher or the last day to have an exam?   
1 answers

Here it is mentioned that you can use your vouchers till 31 may 2023. Thats the last day to apply that coupon