Receiving a 429 when trying to validate NFT on rinkeby network

It appears that everything has been minted correctly however the validate is failing with a 429

https://rinkeby-api.opensea.io/asset/0x1b437042fe29c8fa555bdae6b45d769fc753bb1b/1/validate/

This is odd cause I can go directly to the URI with no issues.
https://gateway.pinata.cloud/ipfs/QmVsE7CTyExEkPwiepZ82W8xRpVtEWdHJMFm9FTNt7LCiZ

Not sure what's wrong, your metadata conforms to the standard used by opensea. Hmm... try reaching out to opensea via their discord, they might be able to provide better support.