navigation menu disappears on smaller screen

i tried turning off responsive and leaving it on. The navigation menu has 2 lines of text as the customer does not want any links in a dropdown. The url is: prejeans.com. What's weird is i can only reproduce this when viewing on an android device or scaling my window on my desktop mac to the size of a mobile device. The iPhone and iPad shows the navigation fine.

Hello Neal,

Please submit a new ticket to EShop category page to send me the super admin account to your site so our support staff can help you to check and resolve these template issues for you.

Sincerely, Giang