I wish to re-install Microsoft Office 2024 professional but cannot find evidence of purchase

Unfortunately, all you can do is contact the third-party seller and request your money back, or maybe they can give you a replacement product such as Office Home & Business 2024.

You haven't done anything wrong here. It is on the seller, but you are the one who is stuck with a product that you can't use.

P.S. There are only two legitimate consumer licenses for Office 2024. One is Office Home 2024 (which does not include classic Outlook) and the other is Office Home & Business 2024 (includes classic Outlook). Each license is for one user and one computer (PC or Mac). No OneDrive storage or AI support included.

Hello

You mean Professional Plus?

If so, The Pro Plus product is not designed for home users. It is a volume license, which means it is intended for organizations, not individuals. These licenses are managed by an organization’s IT department and are tied to a contract with Microsoft. Because of how volume licensing works, activation may depend on things like installation limits or periodic validation through an organization’s KMS server. Those processes require IT support from the organization that owns the license. That is why these licenses are not meant to be sold to individuals. Home users typically do not have access to the IT infrastructure needed to manage or maintain them. Unfortunately, some third-party sellers offer these licenses at very low prices. They may seem like a good deal, but they are often resold in ways that violate the licensing terms. Most buyers are not aware of these details until problems happen. I am afraid you want to return it and ask for your money back.