Storyline and Microsoft Edge Screen Reader

Hi 

I'm currently looking at how I can make my e-learning more accessible and in particular with colleagues that use Screen Readers.

The preferred Screen Reader my company uses is the Microsoft Edge Screen Reader.

I get the principle in Storyline of ordering the content, adding ALT text, hiding content from the Screen Reader etc. However, when testing with the Screen Reader, it doesn't seem to have any impact.

Does anyone have any experience or insight that might help?