My complete guess is that their system thought you looked like the seller trying to artificially inflate their auction. A quick Google search says that as of 2

My complete guess is that their system thought you looked like the seller trying to artificially inflate their auction. A quick Google search says that as of 2021, only 12% of products are sold by auction. They're so obsessed with competing with Amazon with the "buy it now" system that auctions may be an afterthought.