I purchased two Windows 11 product keys through Groupon, and the groupon instructed me to go to a third party website, (LicenseTom dot com) to plug in the Groupon number, my name, my email, & phone number. This 3rd party website emailed me two redemption codes, neither of which was valid, and now the codes read as "redeemed" on Groupon. This is a complete scam. I gave Groupon my money, and they swindled me out of $24. They just lost my business, and I will be spreading the word about Groupon's shady business practices, particularly in the realm of product keys.
