navigation Split Navigation Code Blocking Navigation Links

I have been using the following split navigation code for years and it recently has begun to block some of my menu nav items from being clickable. It has even blocked the logo from linking back to the homepage. Any help is appreciated!

//SPLIT NAVIGATION//
.header-nav {
    position: absolute;
    top: 5px;
    bottom: 0;
    margin-top: 0!important;
    margin-left: 40px!important;
}

.header-nav-item:nth-of-type(2) {
    margin-right: 320px!important;
}

.header-title-logo a {
    z-index: 1000;
    position: relative;
}

.header-display-desktop .header-title {
    flex: 0 0 60% !important;
    z-index: 999999999;
}

Can you share your website URL?

Sure, it's proofsocialco.com

The logo container is covering the links

You can try adjusting this part:

.header-display-desktop .header-title {
    flex: 0 0 60% !important;
    z-index: 999999999;
}

to: 

.header-display-desktop .header-title {
    flex: 0 0 35% !important;
    z-index: 999999999;
}