Hello,
1. By default, the instagram icon is not added, if you want we’ll add that in our next theme update.
2. Looks like you have customized the header and removed some code. That’s why the logo is not in center. You can check that our demo site in mobile screen, the logo is center.
3. change color, use this CSS code,
.main-navigation li a{
color:red;
}
4. To show that share icons, in the article footer, Edit the content-single.php file in template-parts folder. There you can find the code for<div class="socialShareRow">
the share icons, just copy that code and paste in the </footer>
section
5. Use any AMP Plugin.
6. Use the following code get fixed nav in Mobile. Add that in Additional CSS in Customizer
@media (max-width: 767px){
.navbar-brand {
border: none;
position: fixed;
z-index: 99999999;
background: #fff;
top: 0;
border-bottom: 1px solid #ddd;
}
}
Thanks.