The link is fep_query_url(‘newmessage’, array(‘fep_to’ => get_the_author_meta( ‘user_nicename’) ))
I added the & to the url manually just now test it. The point is, populating the ‘to’ field works when i replace “/?fepaction=newmessage#038;fep_to=hechanell” (generated with the link above) with “/?fepaction=newmessage&fep_to=hechanell”.
The message number seems to only have appeared in the link after I updated the plugin today. When I remove it manually and type ‘&’, it works.