Custom Feedback Layers Not Displaying

Hello!

I have a Storyline course that I am working on where we have a unique feedback layer for each of the responses. I'm not entirely sure if it is just a Review 360 fluke or not, but the SMEs are telling me that sometimes they do get feedback layers and other times they do not. 

Does anyone have any idea why this might be happening or what the workaround solution might be? 

Any and all help is greatly appreciated! 

Review the knowledge check questions in Review 360 here.