The invite is working just fine for me.
It is true that the OP did send me a MSDN invite when I paid them 0.124 BTC. However the MSDN subscription was later cancelled after two months (I assume by Microsoft). Seems to me the OP had set up a shell company to gain Bizpark MSDN status, but was later found out by MS to be a fake startup company and they closed OP's MSDN Admin account along with the other invites.
I do not regret spending $30 on the MSDN invite, only because i did get to use it for a couple of months, and now know how all these newbie members (with negative trust) are obtaining these MSDN admin/invites.
For those of you in this thread who lost USD via paypal or chargebacks, or used skype/kik to trade with OP; You do understand that this is a bitcoin forum? This forum is about Bitcoin protocol, bitcoin currency, and blockchain technology. The "MarketPlace>Goods>DigitalGoods" part of this forum should only be for users who have explored the rest of the forum concerning bitcoin.
My advise to those who regret buying from this OP:
1. only use bitcoin
2. always use a middleman/escrow
3. i forgot my third point but it was important