Use invite code HAPPY2019 in the sign up form

FYI to anyone else signing up: Had a few issues, mainly an error saying my activation code wasn't valid. But after clicking it and then waiting about 20 minutes I was able to login. After logging in, I'd click on my profile and got an error saying it didn't exist but that also went away after a few minutes. If I had to guess (I am no expert on this) I would say the server is just busy and "catching up" so to speak.