Hey, you need to log in with Hive Keychain

There are instructions here: https://peakd.com/art/@nftshowroom/nft-showroom-artist-guide-faq-and-whitelisting
And there is discord for any extra questions: https://discord.gg/ajPffSvKys

https://nftshowroom.com/giocondina/collection
You can sell your own art there too (but only original art without any copyright issues)