PenciDesign replied
Hi,
1/ That mean: You need to download "All files and documentation" package from our theme, extract it and get latest version from Visual Composer there.
When you have latest version from VC, just need go to admin page > Plugins > All Plugins > Delete plugin Visual Composer and upload latest version from Visual Composer. That's the way to update a plugin. Your site don't mess anything when you do that.
2/ AMP is a standalone interface, It has a lot of rules need to follow. And this theme supports ads places on AMP via Appearance > Customizer AMP
Best Regards,
PenciDesign