Hey Saar,
first of all, thank you for the purchase!
To hide the logo box, please go to the “Appearance -> Editor” admin menu and add the following line to “style.css” (should be opened by default):
#logo { display: none !important; }
and hit “Update file”.
As for the email – you can e.g. try adding it as a text widget – visit “Appearance -> Widgets” and drag a Text Widget into the “Footer” widget area box. Then insert the email as the content of the widget and hit “Save”. Let me know if this works for you!
Sincerely,
Andrew | Satori Studio