I don't know if they added it before or after they hit 2.5 million, but the 6-7 million wasn't mentioned when they started taking money.This post is from before the first goal was hit, no?:
http://www.neogaf.com/forum/showpost.php?p=225361315&postcount=552
It already mentions the 6-7 million and I also remember reading it myself on the website before the first goal was hit.
It seems like the "real" goal of $6-7 million wasn't mentioned on the site until they hit the $2.5 million goal.
https://web.archive.org/web/20161123205129/https://jillstein.nationbuilder.com/recount
https://web.archive.org/web/20161123211323/https://jillstein.nationbuilder.com/recount
https://web.archive.org/web/20161123234049/https://jillstein.nationbuilder.com/recount
https://web.archive.org/web/20161123234501/https://jillstein.nationbuilder.com/recount
Seems shady as heck.