unable to target alternate user roles with sent invites

The module allows users to invite new users to join the site with different target roles (or classes). automatically assigning a specific class to the new user.
In the documentation it is stated that You can select different user roles to be targeted. I can not make this work.

For instance:
I have geek, core, dj, community, user roles.
geeks invite core
core invite DJ
DJ invite community
automatically.

The function that is not working is if a geek or core want's to invite a different user role.
for instance a geek invites community.

How can I enable this function, i use the user classes to filter permissions and posting privileges.
I would like to invite other roles, without create multiple dummy accounts for the different user roles (classes).