Blog page configuration

Hi,

1.) Excerpt is a default WP function, so nothing which is controlled by the theme. Check out this here on how to get more control over it: http://www.wpbeginner.com/wp-themes/how-to-display-post-excerpts-in-wordpress-themes

You can remove read more link with this code inside functions.php:
// Remove Read More Links from all excerpts

function custom_excerpt_more( $more ) {
    return '…';
}
add_filter( 'excerpt_more', 'custom_excerpt_more' );

Adjust it’s length with this code:

// Define own excerpt length
function custom_excerpt_length( $length ) {
   return 20;
}
add_filter( 'excerpt_length', 'custom_excerpt_length', 999 );

2.) Would you mind providing a precise link to your site, showing the elements in question? We need to be able to inspect them in order to help :)

3.) It’s not our plugin, but a default WP plugin. Don’t forget to regenerate thumbnails after adjust image sizes.
You could also adjust image sizes as mentioned here: https://kriesi.at/support/topic/enfold-image-sizes/#post-336176

Best regards,
Andy