Missing NFT metadata can result from an unavailable token URI, a server that blocks or rate-limits retrieval, or invalid off-chain metadata. First check the token URI and its response directly.
For an EVM NFT, you can request a refresh with the Resync NFT Metadata endpoint. See the NFT metadata guide. If the metadata is reachable but remains missing, contact Moralis support with the chain, contract address, and token ID.