Transfer Alliance to Horde?

My friends are on Horde. I want to pay 30 coins to transfer.

But when I try the transfer service page it says: "Faction change is currently unavailable for Alliance"

I guess it is related to this:

"FACTION BALANCE, October 27, 2018
Faction change is now available on Outland from Horde to Alliance for free."

Any ideas when it will be enabled again?

No idea, but your friend can transfer to Alliance for free. Spend your coins on something else. :P

Hehe. They've formed a Horde guild and want me to join. I'm just waiting for the ability to pay to open up again...