[Zhao Yitian]

Dear ZDoggy, Sorry for the problem. Can we know where do you live? You can contact our local distributor to get support directly. You can find their contact information here: https://xkeyair.com/where-to-buy/
Also you can send email to [email protected], please take a photo of the black key internal structure, so that we can help to check whether there was any broken parts. We will send you the assembling instruction document too.