I created an NFT collection on Solana using Metaplex Candy Machine and everything worked fine on devnet. However, after moving to mainnet, I’m experiencing several problems. First, I uploaded 1000 NFTs to my collection, but the candy machine interface only displays 985 available items. This means 15 NFTs seem to have disappeared somewhere in the process. Second, when users click the mint button, the available count drops by 3 instead of 1, which is really strange. Even worse, the minted NFTs don’t appear in Phantom wallets after the transaction. This is frustrating because everything functioned perfectly on devnet. The issues only started after the mainnet deployment. Has anyone encountered similar problems? Is there a way to recover the missing NFTs or fix the minting process?