Thanks for your response, I've managed to solve the numbering issue and the 404 page modification.
For the admin access I have the set up in local, the website is not yet online until it's completely finished, I downloaded the template from your website some days ago, so I assume it's the latest version of it.
For the social icons I followed the instructions provided but the template is using Helix3, not ultimate, and it seems it's not using Fonts Awesome for the icons as I've tried adding the custom CSS and it's showing a different set of icons on my multiple tries.
BTW, I had to use the following CSS, and not the one in the answer you provided:
.sb-bistro-dribbble::before {
content: "\f16d";
}
Regards.