AICloud app and default user permission

I set up a couple users in my RT-AC66U for cloud access, admin (which appears directly tied to router login) and guests. Admin has full access, guests have access to music and movies. When I load the AICloud app on tablets and phones, it insists on defaulting to admin after router login. Is there a way to set up the tablets and phones so they only open/show the guest user. I know I'm probably over-complicating this but any info or direction is greatly appreciated.
Thanks much.