Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hello !
Have you tried with another browser ? Sometimes, using another web browser can solve the issue.
If you're not able to download Office for whatever reason, you can also get the latest version of Office from Microsoft Learn : https://learn.microsoft.com/en-us/officeupdates/update-history-office-for-mac (under "Release history for Office for Mac") to download the latest complete Office suite.
Download the .pkg file, install it. Open any Office app, and log in with your Microsoft account. You should be able to use Office without issues.
Please let me know if you have any other question !