Hi.
We do not have access to the license key you purchased.
You must use a product key or digital license to activate Windows.
When purchasing from the Microsoft Store, a confirmation email will be sent to confirm the purchase. This email address (MSA) will contain the digital license.
Can you find this email?
Please refer to: https://support.microsoft.com/zh-cn/windows/%E6%BF%80%E6%B4%BB-windows-c39005d4-95ee-b91e-b399-2820fda32227