'Cookie' accounts are cheap Minecraft alts used mainly for cheating, expiring after 10-14 days. They use a 'cookie' for login instead of email:password, requiring a Minecraft client that supports them or a Forge/Fabric/feather alt manager mod. These accounts won't work on vanilla Minecraft but will on clients like Lunar or Badlion. No refunds if a supported client isn't used. Here is a list (not all) of popular clients that support them (We are not sponsored and take no responsibility for them): Novoline, Rise, Astolfo, Raven, Moon, any forge client, and most 'hacked clients'.