Email validation, potentially big prize not sent

Hey there, Mattyboi194! This might be better answered over in our
Rewards Forums. They are a separate team, and might be able to look into it better for you. Thanks for understanding!

I sent them an email, and they replied me from one day to another, so this morning.
I inquired about the dates, and was told that they pass the prize along if the previous winner do not comply to receive it in time.

For me, it didn't ask for any sensitive information, such as my SIN, so I sent the fax today.
Let's see how it goes.

Here's their email:
"Hello,

Thank you for reaching out. We have included the Official Rules below for complete details. If a prize was unclaimed, a redraw was performed.

https://xbox.promo.eprize.com/playsweepstakes/public/fulfillment/rules.pdf

If a potential winner of any prize cannot be contacted, fails to sign and return the Declaration or provide
any other requested information within the required time period (if applicable), or the prize is returned as
undeliverable, the potential winner forfeits his/her prize. Receiving a prize is contingent upon compliance
with these Official Rules. In the event that the potential winner is disqualified for any reason, Sponsor will
award the prize to an alternate winner by random drawing from among all remaining eligible entries. Only
three (3) alternate drawings will be held, after which the prize will remain un-awarded. Prize will be
delivered within approximately 8-10 weeks after winner confirmation. All winners are responsible for all
taxes associated with prize receipt and/or use.

Our records indicate you are potential winner, if you would like to claim the prize, please follow the instructions in the win email you received.

Sincerely,

HelloWorld Customer Care"

Unsure what region you are in and what sweepstake you are talking about but if the Sweepstake winners will be posted here https://account.microsoft.com/rewards/redeem/winners

Potential Winners will be contacted by phone, email and/or mail at the address, email, or telephone number provided with the entry. The Potential Winners then have 5 days to accept the prize if they do not the prize will be forfeited.

The winner will then be announced within 5 business days of the prize being sent to the winner.

You can contact the Microsoft Rewards team and they may be able to let you know if you have won https://support.microsoft.com/supportrequestform/cf50b787-a987-a7ff-133c-6c4e3f638013

Hello Andros635,

Our prize team has informed us that this win email was re-sent last week. Can you confirm receiving this prize in your email? We have also had reports of these win emails being automatically sent to user's junk mail folders.

Hello Melkor The Vile,

We have re-sent this vault prize email to your registered vault email address. Be sure to also check that email's junk mail folder in case the prize was automatically filtered there.