Not downloading courses on any iOS device – Udemy Online Video Courses Review

I have Udemy installed on several different iOS devices including an iPhone 7 and iPad mini 5 and an iPad air 2. I have several courses that I purchased and I cannot download content for offline viewing on any of the courses. I have tried uninstalling Udemy. I have several android devices including a galaxy tab, one plus 6+ and a google pixel. All of my Android devices can download the courses with now issues. Udemy, please fix the downloading issue with iOS.
Review by Jmartell2015 on Udemy Online Video Courses.