474
First, this module is not 100% complete. There is a thread here to read:
https://xoops.org/modules/newbb/viewtopic.php?topic_id=11729&forum=4#forumpost61882
But I think you need to go into the database in the 'xdir_links' table and set the field 'premium' to the value of '1' to get the website to show in the listing.
As I said the version you have is not complete, builderb will be releasing a new version very soon. Read the newest part of the thread above. Hope that helps.