Last accordion item not opening on mobile

We're using your Accordion plugin on one of our sites. However, the last item will not open on mobile. It will open on a mobile preview on a desktop computer, but won't open on an actual phone/mobile device. I've tried rearranging the elements, and no matter what order they're in, it's only the last accordion item that won't open.

If you'd like to test/preview it on a phone/mobile device, the website is yellowsubmarineobx.com.

I didn't know if there was additional code available to make this work?