had the same issue. i was using this code. pretty sure it is from a how to i found on your site somewhere,
/* This part centers the mobile menu toggle */
#oceanwp-mobile-menu-icon {
float: none !important;
right: auto !important;
text-align: center;
margin-bottom: 10px !important;
margin-top: -50px !important;
max-height: 50px !important;
}
