Have 3 session lifetime key but cant get it to work with other accounts

[waihongjai]

I Purchased a lifetime 3 session key, but when i have the 2 Diablo 3 clients, I login and it ask me to associate it to one of my accounts. how do i do it for my second and third one?

I can only seem to bot with one account

 

[Tony]

I login and it ask me to associate it to one of my accounts

such a thing does not exist