Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Groupon actually is known to sell illegal copies. Does your product name carry the word “plus” in it? They are volume license and are for organization accounts only. They cannot be resold to individual end users as it’s violating licensing terms. Check the name of the package you purchase. Volume license can get expired and require organization validation, which you cannot do as end user.