I had a look at your website and it seems the issue is that the mobile menu icon is the same color (white) as your website's background, making it invisible.
To solve this issue, you could add some custom CSS to make the mobile menu icon black (or any color that contrasts with your background). You can do this by adding the following CSS using the Gantry "Custom CSS" particle:
.g-offcanvas-toggle {
color: black;
}
Remember to replace 'black' with any color of your choice if needed. Once you've added this CSS, the mobile menu icon should become visible against your background.
Best regards,
The following users have thanked you: Chad Criswell