if they are not showing up in your templates it means the style you are using neglected to use the $template_hooks. I am thinking I should just abolish using them via plugins since nobody seems to retain them, but seems like such a waste....
anyway, you may use the template edits by sunrise2006, but modify them a little bit so they obey your settings, put them where you want them to appear in the following:
postbit / postbit_legacy
Code:
<if condition="$vbulletin->options['credits_public']"><div>$vbphrase[credits]: $post[credits] (<a href="credits.php?u=$post[userid]">$vbphrase[donate]</a>)</div></if>
MEMBERINFO
Code:
<if condition="$vbulletin->options['credits_public']"><div class="fieldset"><div style="padding:$stylevar[formspacer]px">$vbphrase[credits]</a>: <strong>$userinfo[credits]</strong> (<a href="credits.php?u=$userinfo[userid]">$vbphrase[donate]</a>)</div></div></if>