HAMB Alliance Member discount code application?

When ordering something from the HAMB Store, how do you get the Alliance Member discount? When the discount code is put in the 'discount box', and 'apply' is hit, a message pops up in red that states 'the code is not recognized'.

 

I'm always asked for the user name when I sign in on the HAMB. Works every time.

 

I'm wondering the same thing. What's the discount code for HAMB stuff?

 

Wish I knew that on my last few orders. My bad.