Menu mobile problem& eliminate side space, left and right

Hello.
I have PROMOS Theme installed and I have 2 problems:

1. On mobile device, between the menu`s lines, there is an invisible menu. When you press between the lines, you are redirected on other pages on the website. How can I delete that “invisible” menu?

2. On Homepage, both on the desktop and on the mobile device, I have spaces on the left and on the right of the photos and the text. How can I eliminate those spaces, so the photos and the text to be FULL WIDTH?

Thank you.

The page I need help with: [log in to see the link]