When you request access to the lounge, it may take a while for me to get you set up (usually because of time zone differences).
Also, you won't be notified by e-mail or anything else
AFAIK. The only ways to notice if your application to the lounge has been granted, are A) you click on "New thread" and can actually post a new thread, or B) your UserCP -> Group Memberships says "Joined" for The Lounge.