Hi,

This issue caused by your menu is too long on those screens and it doesn't enough space to display in one row.

You can add more this code to Customize > Custom CSS to make it auto resize when screen is too small:

@media only screen and (max-width: 1169px){
    #navigation.header-11>.container, #navigation.header-10>.container {
    display: table;
    }
    .main-nav-social{ margin-right: 0; }
    #navigation .menu,
    #navigation.header-11 .penci-menu-wrap, #navigation.header-10 .penci-menu-wrap {
        display: none !important;
    }
    .penci-mobile-hlogo, #navigation .button-menu-mobile {
    display: inline-block;
}
    .penci-hlogo-center .penci-mobile-hlogo, .penci-hlogo-center #navigation.header-6 #logo{ float: none; margin: 0; position: absolute; left: 50%; top: 0; transform: translateX(-50%); -webkit-transform: translateX(-50%); z-index: 10; }
    #sidebar-nav { display: block; }
    #navigation, .sticky-wrapper:not( .is-sticky ) #navigation, #navigation.sticky:not(.sticky-active),
    .sticky-wrapper.is-sticky #navigation, .is-sticky #navigation.menu-item-padding, .is-sticky #navigation.menu-item-padding, #navigation.sticky-active, #navigation.sticky-active.menu-item-padding, #navigation.sticky-active.menu-item-padding{
        height: 60px !important;
    }
    #navigation .menu > li > a, .main-nav-social, #navigation.sticky:not(.sticky-active) .menu > li > a, #navigation.sticky:not(.sticky-active) .main-nav-social, .sticky-wrapper:not( .is-sticky ) #navigation .menu>li>a, .sticky-wrapper:not( .is-sticky ) .main-nav-social,
    .sticky-wrapper.is-sticky #navigation .menu>li>a, .sticky-wrapper.is-sticky .main-nav-social, #navigation.sticky-active .menu > li > a, #navigation.sticky-active .main-nav-social { line-height: 58px !important; height: 58px !important; }
}

Best Regards,

PenciDesign

Hi,

Please send me your WordPress site admin URL and admin account ( username and password  ). I will take a look at this to help you.  

Best Regards,

PenciDesign

Hi,

When I login to your admin page by use the information you provided. I got 403 issue - check this image:

http://prntscr.com/10nxt1p

Is your admin page blocked IPs from some countries? Or are you using any security plugin?

If yes, let check and disable it for me. When I done, you can re-enable it.

Best Regards,

PenciDesign

Hi,

I see it works fine, so I think there is something relate to the caching plugin you're using. I just clear all the cache - you can check it again on anonymous browsers to get correct results.

Best Regards,

PenciDesign