Menu icon not showing on mobile/web

Hello, and thank you for a fantastic theme!

I have just updated to the latest version (www.gallegoprada.com) of Customizr and the mobile menu icon (the 3 horizontal bars) is not showing anymore. Instead, an empty box appears where you can click, and it works fine, but it’s invisible.

Also, in the website the icon is not showing (as it appears in the preview that I see on the right side of the screen when I customize the theme options). Instead, I see the full menu extended horizontally.

Any help?!

Thanks!!