WP_Query is getting the post but the_post() not rendering any Post

You made a mistake in the syntax:

if ($featured_articles > have_posts()):
while ($featured_articles > have_posts()) : $featured_articles->the_post();

in the if and while conditions should be -> instead >.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)