premium member problem w/ chess mentor

I have a premium membership which is supposed to let me do 10 lessons a day.  For some reason it is allowing me to do unlimited lessons per day but I can't choose which lessons I want.  The system randomly chooses lessons for me.  Is this a bug or am I doing something wrong?

Hi! Is it possible you've been doing our recently added free problems? 

There are three ways to do CM.  You can let CM choose the lessons for you in either adaptive (CM tries to figure out what you're weak on and feed you lessons in that area) or sequential ( the lessons are in order of difficulty).  You choose those in your CM settings I believe.  The third way is to view the courses and just pick one to do.  I think most folks want to choose their own courses.