Adding in support thumbnail removes editor

You need to add each individual support you need e.g.

'supports' => array('thumbnail', 'title', 'editor'),

The title and editor are added by default in a post type but if you add the supports query you need to redefine them back in.

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