Problem with the “Mobile Menu”

Hello good morning, I have a problem with the mobile menu, when you access the page from any cell phone and click on the menu, it does not respond, I found that doing a little scrolling, and going back up, the menu works normally.

But I don’t think the user scrolls to see the menu.

I hope you can help me, thank you very much. (I thougth that this problem was the theme, but not, it was your plugin, i desactivated for now, i had all in Async)

Here is the video

Update: I found the problem

if i activate “Async JavaScript For Plugins”
Async JavaScript For Plugins With the check and Async, breaks the menu mobile

The page I need help with: [log in to see the link]