Opensea not listing my collection

Smart Contracts
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1

I want to list my smartcontract's collection on opensea without mint any nfts. We will open presale status later and people will be able to mint. After they mint, their NFT's will be listed in this collection. I found a page that called get-listed https://testnets.opensea.io/get-listed/step-two

I tried to list my collection but it throwed that,

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My contract address is: https://rinkeby.etherscan.io/address/0xC465D58d18FC6097e4ace6Ece23e20f03D52D443

How can i list my erc721a contract's collection without mint

2

it's not an ERC721 token. just a contract.
You did something wrong. There is no NFT

3

I think opensea have Problems since yesterday…
Deployed Smart Contract with NFT on ETH + Polygon Testnet 3 days ago, worked without problems…

Since yesterday they cant found my new contracts..
Other users report same problems…

Edit: and your smart contract isnt working, because no NFT minted.