It is already full width same as your website wrapper, but the links on right side supposed to be 2 columns so it fills the whole area
still it shouldn't happen like this if only one column used, so i will improve it in next version for now you can add this to custom.css so the links expand on both desktop and mobile
.linksCol .linksBlo ul {width: 100%;}
It is already like this, the gap is just a padding on top and bottom
Sure, just add this to custom.css
.af_Container .linksBlo .ipsDataList li, .af_Container .articlesBlo li {border-bottom: 1px solid;}
It is aligned, But some of the font awesome icons are smaller that the others even if you set same font size, they cant be perfectly aligned unless you give it a fixed width as you said your self, But you dont need to do that
just give The "Privacidade" word one more space on left side and it should be okay
Sorry for the troubles and hope i answered all your questions,
Have a good day