Hi,
1. I see that you already customized the address form by disabling the state field. At the same place, in the menu Display->Custom fields, you can also disable the telephone field
2. I don't see it displaced and it's working fine. I don't see what you're talking about.
3. That's how your template CSS code is done:
input {
color: #CCC;
outline: none;
margin: 0;
}
in the file
www.initiation-erwachsenwerden.de/templa...186/css/template.css
So you need to remove that color: #CCC; line from that file if you don't want that light grey color.