Hello,
1. You may add this code in the end of text content on your page http://prntscr.com/go80pc:
[vc_row content_placement="middle" css=".vc_custom_1461568398243{padding-top: 20px !important;}"][vc_column width="2/3" css=".vc_custom_1461568540345{padding-right: 30px !important;}"][single_post more_posts="0" title="Featured post"][/vc_column][vc_column width="1/3" css=".vc_custom_1461567979770{padding: 4px !important;border: 1px solid #dbdbdb !important;}"][vc_column_text css=".vc_custom_1506064305646{margin-bottom: 0px !important;border-top-width: 1px !important;border-right-width: 1px !important;border-bottom-width: 1px !important;border-left-width: 1px !important;padding-top: 40px !important;padding-right: 40px !important;padding-bottom: 40px !important;padding-left: 40px !important;border-left-color: #dbdbdb !important;border-left-style: solid !important;border-right-color: #dbdbdb !important;border-right-style: solid !important;border-top-color: #dbdbdb !important;border-top-style: solid !important;border-bottom-color: #dbdbdb !important;border-bottom-style: solid !important;}" el_class="a-center"]
<h3 class="widget-title">Newsletter</h3>
[mc4wp_form id=""][/vc_column_text][/vc_column][/vc_row]
set http://prntscr.com/go80u5 and http://prntscr.com/go80zs, use MailChimp plugin to create the form.
2. I’ve created Prefooter static block. Please check. You may set it in appropriate widget area. http://prntscr.com/go82nq.
3. Please go to Theme Option > Single Product Page > Show share buttons
and read our doc https://www.8theme.com/demo/docs/legenda/#!/wishlist
4. Please check Top panel static block http://prntscr.com/go8610.
Regards