I am someone who has occasionally bought from Ebay and very infrequently sold via Ebay.
My understanding is that over the past two to three years they have changed most of their policies to greatly favor the buyer. While they do need tools to remove unscrupulous sellers, they have gone much too far in the opposite direction. It has now become a "Seller beware" organization. Any disputes are almost always, and pretty much automatically decided in favor of the buyer, and the unscrupulous have figured this out and are taking advantage.
Since it is the sellers who are paying the exorbitant and multiple fees to Ebay, they should be able to expect some support, but it is not there very often.