i thought someone already invited u to the group 

if you installed it then steamgifts will think u owned the game and you cant enter basically nth u can do about it..

i see, you must have synced your account in steamgifts since free wekend everyone technically owns the game for few days..
if you installed and played it even worse, after the free wkend u also cannot enter any giveaway with the same game. i

if they dun sync their account.. if you just joined steamgift, it is automatically synced with your library. there is also a frequency that your account is synced automatically I think..
anyway 1 entry only.. not so easy to win la bro.. dun worry bout it too much..

Congrats ck.chunkeat for winning Saints Row 3

you got pm btw.

seems like steamgift havent put the name yet.
probably need to wait till they put it in.
or you can use the old name.