Missing Arabic vowels!

Hello!
As I am going through the lessons for writing, I have reached the lesson "Fly Like an Eagle". The lessons aims at demonstrating the use of vowels,... but no vowel is showing (I wish I could share a screen capture with y'all to illustrate, although it is pretty straightforward I guess).
Any help would be greatly appreciated.

Cheers!

Hi PfR, 

Our apologies for the delay in getting back to you! Please note we have made some updates to the Arabic course; we hope you find the new content helpful and clearer than the previous content. 

Kind Regards