How to get a new pen with the warranty?

Hello everyone,
During the last year I bought and used a Chuwi UBook X with pen (H7) and keyboard. Unfortunately the pen does not work properly anymore, sometime it completely stop to write although the battery is new.

The Chuwi assistance told me, by e-mail, that the pen has an hardware problem and it should be repurchased. The communication with the Chuwi support stopped after that email.

I wrote to the Chuwi European store in Ebay where I bought the tablet to get the new pen, but the never answered me.

The question is: how can I get the new pen exploiting the warranty?

Thank you to all who want to help me.

Hello AlbertoR,

Did you send email to service@chuwi.com to ask for it inside warranty?

Regards

Yes, the Chuwi assistance, in the former post I wrote, was the service@chuwi.com email.