Issue with rotating testimonial – Hello CEO

I followed the instruction about adding testimonial on the home page. I actually haven’t customized it. I am using what came with the demo.
 
If you check https://www.tubellephotography.com/, you can see that all 3 testimonials are displaying with the second and third styled a little bit different from the first one. 
 
I also noticed that whenever I add the rotating testimonial on the homepage widget, the white background of the main menu disappears. It re-appears whenever I would remove the rotating testimonial.
 
Attached is the screenshot of the shortcode that I added on my widget. As you can see, I only added the base rotator just like how you added it on the instructions but still all 3 are displaying at the same time and not rotating.
 
I also attached a screenshot of the rotator settings that came with the demo, I didn’t change anything.
 
I also checked if the rotator plugin needs to be but it seems to be up to date.
 
Please help on what I need to do.
 
Thank you!