Apple Watch doesn’t start

Dear all,

I bought my Apple Watch Series 6 GPS, 44mm on February 2021. In April 2022 it has stop working correctly, it pairs to the phone and reproduce sounds but the screen doesn’t turn on or react to any commands. Screen is totally blank.

I use it as my watch for the office, it hasn’t suffered any physical or water damage ever.

I went to an Apple Store recently and they told me that because the warranty is just expired (1 year and 2 months), there is nothing to be done and the substitution of the watch would cost over $300.

I have read that there is a wider blank screen issue with the Apple Watch 6, so it is especially surprising that Apple does nothing to help.

What can I do to solve this? Can you provide technical counsel to make the watch work?

Thank you!!