Hello,

The above-provided code is for the recent theme version you have not updated yet.

Now the issue has been fixed. Navigate to the Theme Settings > Custom CSS and change the colors in the code:

.header-has-no-bg.header-color-light.act-scroll {
    background-color: #ffffff;
}
.act-scroll div .wrapp-header .main-nav .menu-nowe-menu-container #menu-nowe-menu .item-level-0>a {
    color:#000000;
}

Best Regards