Mainnet airdrop issue (Looking to airdrop to multiple address with ERC721 contract)

I’ve created a 721 to be minted via Main Net but when I click on the airdrop option it doesnt give me the upload CSV option and only allows for one address. I cannot get the option to load.

Thanks for reaching out. Airdrops to multiple addresses is only supported with ERC-1155 contracts at this time.