I just made a rookie mistake with GoGreen....I signed up (even noted the date) but neglected to confirm with cabin steward onboard. Called CC about missing points and she wanted to know if I had a screen shot of the sign up screen. I did not (never even occurred to me), so now I wait to see if they will give me the 5 points. It was my mistake to not confirm on board and in the future I will take a screen shot.