This could probably caused by the activator was killed by antivirus. Therefore, your Windows 10 was returned back to inactivated status. Usually if you got Windows license key, your Windows 10 won't disactivate unless you have changed new motherboard.

Please buy a Windows 10 activation key from here, it is just RM4.50. The key is 100% working. If you are still facing inactivation issue, please do a clean Windows 10 installation.
https://shopee.com.my/Microsoft-Windows-10-...8724.7301114017

Why account linked with license? I don't think it will works because my Microsoft account already linked so many different Windows 10 license key. Never see that my Windows 10 get activated.