Listing through Manifold Gallery, Indefinite End Date?

I’ve minted my first NFT. My intention was for it to be 20 editions (ERC-1155), and for sales of them to be open indefinitely until they’re gone. When I went through the process of listing them, I was able to set the listing price, but I see no option to set the duration. Now that it is minted, it says once the first purchase has been placed, the listing will be active for 1 day. What did I miss here?

Can you share a link to the auction?


So is this a limitation of listing through the gallery? Or a bug?