Mastery Goals not working for Computer Programming! - About to be on FMLA - Please help

Hi, I am going on FMLA for the rest of the year and am trying to get the Mastery Goals to work.

I created the class. Kids joined. I went to Assign and can assign other courses but why won't it let me assign Computer programming and Java Script?

If anyone uses the Intro to HTML/CSS do you have any resources you would be willing to share? Worksheets, quizzes? Anything that will help my kids complete this Website Building Basics class seeing I will be out the rest of the year.

Thanks so much, Stacy --  [Edited to remove email addres]