Why are my minted NFTs hidden on Opensea?

Opensea aims to provide a level of protection by hiding certain NFTs from users. This is a protection mechanism designed to hide unsolicited NFTs from popping up. In our case, we're giving you a free NFT but due to the way it is generated, Opensea mistakes this free gift as an unsolicited gift. Rest assured it's a legitimate gift for the lucky few and should be cherished. The full Opensea article can be read here. Go here to find out how to unhide them.