Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Look on the C: drive for office files installation
Program files or Program file <x86>\Microsoft office\office16 there needs to be a files with ospp extension
Copy that path and pasted it in CMD, it should be open as administrator
So now you can get status of the key with cscript ospp.vbs /dstatus
To remove the 5 disigt key use
cscript ospp.vbs /unpkey:WRYPT (example)
After remove all keys from there run again the status to make sure theres no more key