Rzbox windows 10 activation

I purchased chuwi rzbox (without ssd and ram and bought them in a local store). After installing windows 10 home it says that windows is not activated and when i try to activate it in Settings it says ‘’ We weren’t able to activate Windows on this device. You can activate this device by going to the store and purchase a geniune copy of Windows.
All my previous laptops and pc’s were activated automatic even after replacing of ssd since windows key is related to motherboard.
What is the way to activate windows on rzbox?

Hello, if you are prompted to activate, please contact this email service@chuwi.com, after providing the serial number, there will be a new key
Thanks and best regards

Thank you, windows is activated.