A Microsoft file hosting and synchronization service.
Hello
Based on the information you are sharing, you are being sold a bootleg.
Sellers from Groupon can be extremely unreliable, as they often resell volume licenses meant for organizations, not meant for general consumers. It is a violation of licensing terms because these types of licenses cannot be resold.
You were being sold a subscription license specifically for educational organizations.
It's not about YOUR OneDrive account being full, it's about the eductional organization account being full. This has to do with a change that Microsoft implemented last year for educational users. This change was explained here:https://www.microsoft.com/education/products/microsoft-365-storage-options And I quote: "Microsoft is making changes to our storage offerings across our Microsoft 365 for Education suite. Starting with their next contract renewal, but not before December 2024*, tenants at all institutions will receive 100 TB of free shared storage across OneDrive, SharePoint, and Exchange, with an additional 50 GB or 100 GB of shared storage per paid user for A3 and A5 subscriptions, respectively (not including student usage benefits)." The key word here is "pool" storage. Therefore, this issue affects the entire account of the educational organization. You should contact your school's IT department and let them know. They should visit admin.microsoft.com and follow this path: Microsoft 365 admin center > Reports > Storage to check the health of your organization's storage. If it's running low, they'll need to do a cleanup or contact Microsoft to upgrade the storage.
Since you are not part of THAT organization, you run into a dead end here. I am afraid you would have to dispute this with the seller if still possible, or reach out to GroupOn support to hopefully ask for your money back.