Why do some people have courses that is not showing

Question

I don't understand some people have data science, coding for marketing,kotlin,jquery,php,sqift4,machine learning Rudy,R and other courses and certification but it's not showing as a option to learn,why can't it be available for all?

Answer 1

These people did the courses before the courses were withdrawn from sololearn.

Answer 2

Will the courses come back?