Theme Check reveals the problems shown below.

REQUIRED: Text Domain: is missing from your style.css header.
Warning: More than one text-domain is being used in this theme. This means the theme will not be compatible with WordPress.org language packs.
The domains found are avia_framework, woothemes, wordpress-importer, envato, , tgmpa, plugindomain, avia_builder, woocommerce, LayerSlider, installer, Layer
WARNING: The theme uses the add_shortcode() function. Custom post-content shortcodes are plugin-territory functionality.
WARNING: The theme is using #wpadminbar. Hiding the admin bar is not allowed.
WARNING: Found wp_deregister_script in framework/php/function-set-avia-frontend.php. Themes must not deregister core scripts.
Line 1566: if($deregister) wp_deregister_script( $handle );
WARNING: Found wp_deregister_script in config-layerslider/LayerSlider/wp/scripts.php. Themes must not deregister core scripts.
Line 52: wp_deregister_script(‘jquery’);
Line 187: wp_deregister_script(‘jquery’);
WARNING: Found a translation function that is missing a text-domain. Function esc_attr_e, with the arguments ‘Move up’
WARNING: Found a translation function that is missing a text-domain. Function esc_attr_e, with the arguments ‘Move down’
WARNING: Found a translation function that is missing a text-domain. Function esc_attr__, with the arguments ‘Insert Video’
WARNING: Found a translation function that is missing a text-domain. Function _n_noop, with the arguments ‘This theme requires the following plugin: %1$s.’, ‘This theme requires the following plugins: %1$s.’

and plus a lot more