Edition title resulting in a different format on nft marketplaces

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Hello, I am an artist currently attempting to mint my recently released EP on manifold.xyz. After minting onto the testnet, Goerli, I ran into a minor issue that I am unable to resolve on my own. After minting onto the testnet, the format of the edition title reads “#1/2” on opensea, and I would like for the edition title to only read what the given song title is, without the “#1/2”. Is this a metadata issue/is there a way to edit the metadata of an already minted nft onto the testnet or mainnet? I chose the smart contract to be an erc-721 as well. What I am referring to can be found in the picture attached to this email. Thank you and I look forward to hearing back from you.