WordPress login fail after .htaccess domain redirect

Did you also change the site URL in the settings? WordPress needs correct settings for these, otherwise the login page on steamsigs.com will still do the post to amazon40.com and you’ll never get the correct cookies set.

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