Get this error message: The package could not be installed. The theme is missing the style.css stylesheet. Can someone assist?
Read this article hope your problem will solved Style sheet error
This is your item support
If you have any other question about that theme you can ask at here as a comments
First thing please confirm that you have purchased WordPress theme. If you purchased WordPress theme and can’t install and getting error ‘theme is missing the style.css stylesheet’ then please check the following:
You have to download the Item from your Envato Dashboard Downloads then have to unzip and you will see a .zip file name with matching your theme name. You have to install that themename .zip file.
you can check this helpful article stylesheet error
Also you can unzip your purchased download and check the theme documentation hopefully you will get necessary support in documentation how to install and all necessary help. If you have still problem with the theme then The best way to get the support is Contact your purchased Theme Author.
Contact Author because Item Author are best expert about their Item functionality.