logging into Khan Academy issue

Hello,

I have set up all of my Algebra 2 classes with a class in Khan Academy.  I am trying to get all of my students to login to it so I can give new and make-up assignments.  To access KA our students enter by going into our district Clever site and then my Teacher Page.

A couple students are having trouble logging in.  We have tried full email addy for username and both computer and clever passwords.  We have tried the clever username and both passwords.  Still nothing.

What should I do?  Do I reset their password?  How do I do that?