This week's maintenance included an update that will allow players to earn a new currency called Echoes of Ny'alotha.

Before an alt character opens their Mythic Cache for the week and before they can earn this currency through in-game activities, the character on the account with the Rank 3 Essences will need to login first. This will tell the game that the account is now eligible to receive this currency on other characters.

Customer Support will not be able to provide any Echoes of Ny'alotha in cases where a cache has been opened before the account is considered eligible. However, there will be many other ways and opportunities to earn Echoes once the characters are eligible. See this topic for more details: Obtaining Rank 3 Essences.