Enable OpenSea

This page allows you to enable OpenSea. Unfortunately, there is a minor incompatibility between the Off contracts and OpenSea's expectations, meaning you need to manually approve the OpenSea contract address before you can use their marketplace for your Off NFTs.

You will need to do this to sell your NFTs in their marketplace, or to accept existing bids

You can also do this on polygonscan if you prefer. The Off contracts are verified, and the method that needs to be called is setApprovalForAll. The address to approve is 0x58807baD0B376efc12F5AD86aAc70E78ed67deaE. Do not approve any other addresses except at your own risk.