The free subscription is for during the beta testing period and only lasted a month. It is the actual subscriptions (copper, tin, molybdenum) that count down starting at launch.
The one SM's buying for you is a real subscription, not the free thank-you-for-helping-us-test subscription, so it will only begin counting down at launch.
Well, it does depend. If the subscription gets bought before the end of the offer (which, as far as anyone can tell, ends Tuesday-ish) then GiaToria should get a month's worth of tokens, votes and credits, and then another whole month's worth of tokens, votes and credits when Glitch beta ends.