Another NFT collection, ArtCat, is taken off OpenSea’s list without any warning. The NFT project said that they got in touch with the Opensea support team when their collections were still online.
They are going to ask them to confirm their account and payment. But OpenSea turned down their request because the project hasn’t traded 100 ETH yet, which is a requirement.
They said that, other than the email from OpenSea about the verification, they hadn’t heard from the NFT marketplace. Also, they said that OpenSea took their collection without telling them.