Heyo,
I just came back to looking at this after backing it a while ago and it lets me sign into the forum but when I try to sign into the main site it tells me my password is invalid. Help please! =D
You might try to renew your password on the main page and set it to the same password. I know that this solved at least my login problem when it first started. Let me know if that worked and if not, you might want to consult @TobiTobsen
Thanks Yuusou, I just couldn’t find the reset password part on the front page. I got in, you pointing it out made me search a little harder. 
So does everything work now?
Yes I was able to get on my account and access my alpha code for steam.