They might have received an investment of $X which will allow them to offer Y free invites. When they reach that number they will stop providing you with free t

They might have received an investment of $X which will allow them to offer Y free invites. When they reach that number they will stop providing you with free tokens. I would assume getting the early users would be great for them. Once the campaign stops those links won't die and it will lead to free sign-ups.