Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Which license are you using?
Are you using subscription, such as MIcrosoft 365 personal, family, etc?
Or perpetual license, like Office Home 2024, or Office Pro Plus, Standard, LTSC, etc?
Please provide the full and exact name of the license.
You also need to tell me what you are using it on, Windows 11, or macOS? If macOS, which OS version?