I'm having the same problem as the one described in this post:
 https://gvectors.com/forum/general-questions/secondary-usergroup-options-missing/ 
I have 2 Usergroups that can be marked as Secondary (1 Registered and 9 USA - Denver, CO):


But only one of them appears on the Account page for a user:

I am using the User Custom Fields addon. Does it have something to do with the value that is listed in this field?



 
                         
                        





