CC Button not showing in course, even though it's selected to show from the Player (Storyline 360)

I have a 4.5 minute video, and it's the only slide in the course. I selected to display CC from the Player options. However, the CC button does not show when I play the course. I've attached 2 images - one showing CC is selected and the other showing how the CC button is now showing in the course. Can you help? ASAP?