If you aren't seeing the NFTs you've minted or purchased on Tellie on OpenSea, try the following:
1) Visit: https://opensea.io/
2) Click on the 'person' icon.
3) Sign in with your wallet.
4) Once signed in, your profile should load. You will then see any NFTs you own with the wallet you've connected.
5) If you still don't see the NFT in your OpenSea account, click 'more'.
6) From the dropdown, click 'Hidden'. All hidden NFTs should be found here. You can then click on the three dots next to any NFT you were looking for and click 'unhide' to showcase them on your Open Sea profile. For more information on hidden NFTs, visit OpenSea's support site.