I forgot whether I bought avant yesterday or today, why did it suddenly change to spot when it was clearly in the alpha column? What is the alpha column?

I bought 25U, and when it was in alpha, I even saw it rise to 43U. After switching to spot, I can't see the cost price? #avnt anyway, a night has passed, and my funds decreased by 25U. I also don't know how to play with contracts; I want to ask if there really is a 30U expert?