How do I buy a key if I already have an account since I bought honorbuddy?

[myjudgmentx]

Do I just make another username etc when I buy demonbuddy or is there a way I can add a key to this account?

 

[bambam922]

Use the same email you used when you purchased honorbuddy.
Both keys will show up in buddyauth.

 

[aqh]

as bambam said, register with same e-mail.

Here's a picture of my account on buddyauth:
http://i.imgur.com/ICTYq.png