I thought Rank 3 essences were BoA to send to your alts

[anon21459328]

They explained it in the stickied post:

Obtaining Rank 3 Essences on Alts

UPDATE MARCH 17 To enable your characters to receive Echoes of Ny’alotha, you must first log into your other characters who have Rank 3 Essences. This will also unlock your Rank 3 Essences for purchase from MOTHER on eligible alts. – As we announced last Thursday, with scheduled weekly maintenance in each region, a new system will allow players who have Rank 3 Azerite essences on at least one character to more directly acquire those Essences on other characters. This will use a new currency c…