Deactivate the plugin, then activate again.
Done. No changes that I see.
find_replace_templatesets("member_profile", "#".preg_quote('<span class="largetext"><strong>{$formattedname}</strong></span><br />')."#i", '<span class="largetext"><strong>{$formattedname}</strong></span><br />'."\n".'{$userpagelink}');
Add
<br />($userpagelink} beneath
{$formattedname}</strong></span> in
member_profile template.
Also, the link won't show up if the user has a blank userpage. When I wrote the plugin I saw no reason to link to an empty page.