On PC & Mac, the latest version of the Kindle app is required.

I would like please help to remove the Kindle kfx DRM of the following ebook: https://cutt.ly/1R8Tw6a

In the amazon website has the following message: On PC & Mac, the latest version of the Kindle app is required.

The video https://www.youtube.com/watch?v=IDIm1l3qhlk teaches How to Remove Kindle DRM on Windows 10(without downgrading).

When I use kindle.cmd, to Disable KFX support in Kindle for PC and try to download the ebook on the Kindle app to PC, It is showed the following message: PCMAC_126_Delivery_Error_OpenGL