Hi! Thanks for reaching out. Could you clarify here a bit. What wallet are you using to see your NFT? Valora has an NFT viewer as does the mobile Metamask wallet.
Regarding Mintdropz, were you trying to create a trial account? I’m looping in Mash as well and finding out more here. In the meantime, would also recommend checking our Discord channel where there are other NFT builders who may be able to talk through and troubleshoot based on their experiences Celo. There’s also a few active marketplaces on Celo so folks there will be able to speak on how you can plug into those if it makes sense for what you hope to do.
For NFT marketplaces there’s a few including Ariswap and Cyberbox. If you haven’t yet, would def recommend sending a message in the Celo NFT Discord group. Folks across the Celo ecosystem there may also be working on new marketplaces that you can plug into.