A button on my mobile site won't load but it's fine on desktop

Site URL: https://www.auradayspaludlow.com/facials

I've added a code to use a site overlay and it works fine on the desktop. Once you're on mobile it forces you to hold down on the button to get to the overlay. BUT I have one button on my header that works just fine on desktop and mobile

Hello @Hayleycp, Hope you are having a great day. Can you please share the code you’ve added? Thanks!