You are doing it totally wrong.
Your child theme is wrong. It cannot have a whole set of complete theme files and with style.css pointing to Evolve plus as the parent theme. This way you have a duplicate of all the functions, that’s more than a thousand fatal errors!
In a child theme you can only have style.css and other standard template files, and only one functions.php, cannot have a whole set of theme function files.
Please refer to the following or hire a developer to assist you.
This screenshot shows an almost complete set of functions files in your evolve Plus-child theme.
This is your evolve Plus-child theme style.css header, which clearly point to evolve-plus as the template, which results in all these fatal errors. http://prntscr.com/7qbm40