Can’t sell any cars on auction house?

I’m just wondering if anyone else experienced this problem. I noticed for a month or two ago that it hasn’t been letting me sell cars. I have doubles of some cars and some cars I don’t care about and want to sell, and whenever I go to the festival I don’t see the prompt to sell them. I have been hordeing my cars to get as many different ones as possible and I couldn’t even tell when I started having this problem.

Note: I am passed all tutorials, and I converted them to stock, so they don’t have another person’s paints/tunings/upgrades in them.