Congratulations dude !!!!!!! Best of luck
Just an update in case it could help anyone, they called me from the embassy and I found out that the reason behind temporary refusal was because they wanted my old passport to remove the B1/B2 visa from it before printing the immigrant visa. Which I had with me during the interview but they didn't ask for it although it's the passport I entered the lottery with. The status has been changed to "Issued" today. Good luck everyone!