This the code I used in the Header HTML box of a Web Login page. This displays the page properly.
{nwa_cookiecheck}
{if $errmsg}{nwa_icontext type=error}{$errmsg|escape}{/nwa_icontext}{/if}
{nwa_text id=7980}<p>
Please login to the network using your
username and password.
</p>{/nwa_text}
<center>{nwa_social_logins}</center>
Maybe this helps. . this code is stock outside of the <center>code</center> line.