Help! Rise accessibility concerns.

Hi

The LMS Team at my work claim that Rise doesn't meet accessibility standards. Therefore, they won't publish an eLearning project I've developed in Rise and say I'll need to re-do it in Storyline. 

I'm not sure what their specific accessibility concerns are, still need to find that out. In the interim, can anyone help by clarifying if Rise is accessible or is it just on its way to becoming accessible?

Regards

Joel