the code is the email address where you received the email, as indicated in the message

I just received a mail from STEP saying that I'm the next person in queue, but the mail is dated TODAY, 3 days after STEP was closed...
I'm really happy but... any explanation??? Isn't it strange?

Hi, I'm coming with a friend who would like to DJ some boogie/swing/lindy, but... but we are coming from Italy and cannot bring any boombox/console or such things, just music.
Maybe you wanna be in contact and try helping us to arrange a swing dj set on the playa? We would like dancing, too!!!