When me and my Girlfriend are playing on the same Battle.net account but with diffrent subscriptions, why can i only boost 1 charr on both accounts? i could boost on both in TBC but not now.? is it becouse of all the traffic it is bugged?
Quoting from the store page, emphasis mine:
TL;DR If you bought boost for WoW1 you can’t use it in WoW2.
Also, sharing accounts is against terms of use so either you or your girl friend should own Battlenet account.
Also if it’s like the last one each Warcraft account can have it’s own boost.
I needed to buy one for a second account and I did, so each of you can have their own boost.
well thats kinda lame if its like that, im Paying for 3 diffrent WoW accounts so why shoulden i be able to buy 3 diffrent boost?`they make more money of it and it worked like that when TBC launched with 3 diffrent boost. But ty for the answer 
You can but each boosted character has to stay on it’s own Warcraft account. Blizzard don’t want you boosting more than one character per Warcraft account.
You never could move a character to another Warcraft account or use the boost on an account that already had one used on it. In classic they have always been locked to a Warcraft account.
it is 3 Diffrent Warcraft accounts,its just on the same Battlenet account