Mac OS big sur, isent working kindle format, says that drm is active
Please describe your problem more clearly. To remove drm on Mac big sur, please follow this guide: https://www.epubor.com/remove-kindle-drm-on-macos-1015-catalina.html
Any more problem, please feel free to contact us via support@epubor.com.
Mac OS big sur, isent working kindle format, says that drm is active