Add code to your child theme’s functions.php file or via a plugin that allows custom functions to be added, such as the Code snippets plugin. Avoid adding custom code directly to your parent theme’s functions.php file as this will be wiped entirely when you update the theme.
By default, WooCommerce blocks non-admin users from entering WP Admin, or seeing the WP Admin bar. These areas are usually not relevant to customers and are therefore hidden.
To disable this restriction, and re-enable the admin bar for all users, use the following code:
https://gist.github.com/woogists/c24c04738e7980ff22fcd46e8aed66a9