how to return the wordpress path to the new site

If I have read this correctly… If you want to have your url as fittergroup.com but leave all your files in fittergroup.com/blog take a look at the WordPress documentation on ‘Giving WordPress Its Own Directory

In your ‘General’ settings panel:

In the box for WordPress address (URL): change the address to the new
location of your main WordPress core files. Example:
http://example.com/wordpress

In the box for Site address (URL): change the address to the root
directory’s URL. Example: http:// example.com

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