Medallion Member at time of booking, but not at check-in.

Hi all. A few months ago I booked a ticket for myself, wife, and baby to visit family in South Africa for the first time (wife and baby). At the time of booking I was a Silver Medallion member and was told that myself and my wife would be allowed 2 bags each (1 free + 1 medallion). However, after logging into my Delta account yesterday I saw that I am no longer a Silver Medallion member. Does this mean that we will no longer be able to get 2 bags each? I emailed and called Delta but I could never get a clear answer. The best answer was that I would see at check-in, but that will be too late.

Does anyone know the total amount of bags we will be able to take as a family (2 adults + 1 infant in arms)?

Any accurate response will be GREATLY appreciated.
Thanks a lot.