I found the Private Offers easily from December thru March.... I wouldn't even have to try. Then when I needed another one, I couldn't get that pop up to appear for the life of me. I tried almost every day for 2 weeks when I knew I was going to grab the SS. and yes..
that is pretty much what I looked like. I feel your pain Kaleb..
I don't know how anyone can provide proof about it appearing more often at times... I would just hold on to the latest private offer and bring it if you cant find another. Worth a shot.. Maybe you can even say that another dealer was willing to accept
Wish I could be of more help