Quote Originally Posted by nodoze View Post
I recently read a post on a discord that someone reported that the level 58 boost is 1 per Battlenet (Bnet) instead of 1 per wow account on a Bnet. If I recall correctly the poster had 8 wow accounts on their Bnet and after buying the 58 boost on 1 wow account they could not on any others on their wow account.

Please chime in if you encounter this or not.
Unless I've done something special, it's one per WoW account. I just activated a 2nd boost yesterday on the same Battle.net account in the EU realm, no problems. Hope it works out for you!