Not sure if this belongs here, and if it doesnt, my apologies, hopefully someone can point me in the right way. I just got an expert flyer premium subscription. However, when I look at AA flights, there is never any availability for C class fares. I even called AA Plat desk, and they confirmed the dates/flights I was looking at had C class fares. Does anyone with experience with expert flyer know if that is the best tool to look at AA upgrade availability? If so, how is it that none of the flights I ever look at have any availability? Is there another, better tool to use?