I have already tried link 1 and it wasn't what I was looking for, So, I tried you second suggested link, but unfortunately this is what shows when I am on (en/home), still the two menus.
I would like to clarify that both suggestions might be working when the folders are made only for the languages. In this website, it is not the case, We need drop down menus on the nav. so we separated each parent item to Folder, and there are some other pages with NO folder. So it is a mix.
In that case I added the cod you provided in your website, but didn't work.