Opensea not listing my collection

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

I tried to list my collection but it throwed that,

My contract address is:

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

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

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.