social icons and home page

I have to ask you some questions: I noticed that the link to the email does not work and sends me back to the home site. Maybe I wrong something, but I do not know how to do. Can you help me? (I do not understand much about these things … I’m only an architect ahaha)

second question: if you see my home, shown at the bottom there is a square that says “no image available” …. How do I change the written and put a picture? If you press it you go to see a video.

third question: I’ve selected only a widget for translation, why appears two? How can I leave one?