Navigation overlay on Smartphone

Hey Rene!

That because of your CSS customization. Please try adding following code to Quick CSS in Enfold theme options under General Styling tab

.header_color .avia-menu-fx, .header_color .avia-menu-fx:hover, .html_header_top .header_color .main_menu ul:first-child > li > ul, .sub-menu {
    height: auto;
}

Please make sure that > sign is not converted to – http://i.imgur.com/IDXRZQ3.png in Quick CSS field.

Cheers!
Yigit

Hey!

You are welcome!
For your information, you can take a look at Enfold documentation here – http://kriesi.at/documentation/enfold/
And if there are features that you wish Enfold had, you can request them and vote the requested ones here – https://kriesi.at/support/enfold-feature-requests/
For any other questions or issues, feel free to post them here on the forum and we will gladly try to help you :)

Cheers!
Yigit