Got same problems. They shutdown my listings a few times. But I was selling the actual crypto currency. I don't find it fair that ebay allows other forms of currencies and other digital items but when it comes to cryptos it's under the restricted area. Selling currencies is allowed. Selling digital items is allowed. But selling digital currency is not allowed? I think they just hate cryptos. But I never sell btc or anything over $15 anymore. I already made my money. And I put it one item at a time. Just to be safe.