Can't Start Auction for your NFT?

Due to the semi-fungible nature of ERC1155, which allows multiple owners to have the same token ID, Uptick currently does not support auctions for these types of NFTs.

If you own an ERC 721 NFT (also known as a 1/1 NFT), you will see the option to set up an auction. Thus not all types NFTs are supported to be auctioned.