It's not uncommon for email from that part of the world to get stopped by spam filters over here (and unfortunately it's too often justified). I check the
webmaster@thearma.org address and haven't received anything from you, and if you have emailed the ARMA Director (see address at the bottom of every page) and not received a response, it could be that or he may have missed it, since he gets a ton of mail every day. The application is now submitted by email, so I would recommend you go ahead and submit your application (without payment until you receive a response) and be clear where you're from and that you're trying to form a group. That instruction can probably be removed now, but I'll bring that up with the Director.
By the way, please edit your username in your profile to include your last name in compliance with our forum rules.