Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi,
To better understand the issue:
When you say it is not opening, is it just loading, or are you getting any error messages or codes?
Are you using Windows or macOS? If you are using a Mac, what version of macOS are you running?
Please also go to: https://account.microsoft.com/services
Can you confirm if your license or subscription appears there and is listed as active?