Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Please provide an answer to these questions.
On the other PC you are experiencing problems with, if you log into your Microsoft account, are you unable to install Office on that PC, what error is indicated, please provide a screenshot.
What version of Office do you have, is that a standalone version of Office like Office 2021, 2024 or a subscription based version of Microsoft 365.