Answered but that is totally a different subject. If you don't get my answer start a new topic.
find this
<if test="postSignature:|:$post['post']['signature']">
{$post['post']['signature']}
</if>
change to something like this
<div class="signature" data-memberid="{$post['post']['member_id']}">
<if test="groupSignature:|:in_array($post['post']['member_group_id'],array(4,6))">
<h1> I am an administrator </h1>
</if>
<if test="groupSignature:|:in_array($post['post']['member_group_id'],array(7))">
<h1> I am a moderator </h1>
</if>
</div>
For the avatar question
<!-- **************** below is the old code. remove it. ************** -->
<if test="avatar:|:$author['member_id']">
<li class='avatar'>
<if test="canSeeProfiles:|:$this->memberData['g_is_supmod'] OR ( $this->memberData['g_mem_info'] && ! IPSMember::isInactive( $author ) )">
<a itemprop="url" href="{parse url="showuser={$author['member_id']}" template="showuser" seotitle="{$author['members_seo_name']}" base="public"}" title="{$this->lang->words['view_profile']}: {$author['members_display_name']}" class='ipsUserPhotoLink'>
</if>
<if test="hasVariable:|:$this->settings['member_topic_avatar_max']">
<img itemprop="image" src='{$author['pp_main_photo']}' class='ipsUserPhoto ipsUserPhoto_variable' />
<else />
<img itemprop="image" src='{$author['pp_thumb_photo']}' class='ipsUserPhoto ipsUserPhoto_large' />
</if>
<if test="canSeeProfiles2:|:$this->memberData['g_is_supmod'] OR ( $this->memberData['g_mem_info'] && ! IPSMember::isInactive( $author ) )">
</a>
</if>
</li>
<else />
<li class='avatar'>
<img itemprop="image" src='{$author['pp_thumb_photo']}' class='ipsUserPhoto ipsUserPhoto_large' />
</li>
</if>
<!-- **************** below is the new code ************** -->
<li class='avatar'>
<img itemprop="image" src='{$this->settings['upload_url']}/group{$author['member_group_id']}.jpg' class='ipsUserPhoto ipsUserPhoto_large' />
</li>