Go to: 'Groups, Camps and Clinics' using the menu (... button) when on mobile phone). 
Go to first week of the next session, arrow over to the week of  1/7/20  to enroll. Hover on the specific day of the week you are enrolled (between 1/7-1/13)  and all of the classes will pop up.  
​iPhone X, iPhone XS, and iPhone XR users will need to use a desktop/laptop as the login does not currently work on IPhone X/XS/XS  MAX/XR (new iPhones.)