While normal Ender Chest functionality is disabled on Atlas, similar storage is available to players via the Bankers present in every NPC Town. The items stored in a player's vault are accessible from any town's Banker. Players may visit a Banker to access their Personal Coffers and their Personal Stash.
Every player has a Personal Coffer where they may store their gems for safe keeping.
In addition to gem storage, players have 27 slots of storage available from their Bank. Nearly all items can be stored in the Vault, excluding Shulker Boxes and Bundles.
Ender Chests that do exist on Atlas (such as the ones in all NPC Town Banks) act as your Nation Coffers. Gems can be deposited into your current Nation Coffers via any Ender Chest you encounter, whether it’s in an NPC Town or one you place in your own Town.