Hi there,
Welcome to SeaTheme forum.
The menu-panel-from-right layout for mobile is available if this header layout is picked up:

But it will affect desktop layout also, it is possible to disable it for desktop by the custom CSS(“Appearance > Customize: Additional CSS”):
@media (min-width: 768px) {
.hide-menu-desktop .navi-header, .hide-menu-desktop .header-bar-social {
display: block;
}
.navi-hide .navi-trigger-out {
display: none;
}
}
Regards!
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