Hello Murilo, first thanks for your purchase.
1) Regarding portfolio filters conflict: To use multiple “sort” (data-plugin-sort) in the same page you first you should define different ID for each “sort” plugin. For it you should define different ID’s trough attribute data-sort-id:
// Default Demo Agency 2 sort plugin - Filter/Links
<ul class="list-unstyled sort-source" data-sort-id="portfolio" data-option-key="filter" data-plugin-options="{'filter': '.ui-design'}">......</ul>
// Default Demo Agency 2 sort plugin - Sort Destination
<div class="sort-destination w-100" data-sort-id="portfolio">.....</div>
// Portfolio gallery you wish to add in the demo - Filter/Links
<ul class="nav nav-pills sort-source sort-source-style-3 justify-content-center" data-sort-id="portfolio2" data-option-key="filter" data-plugin-options="{'layoutMode': 'fitRows', 'filter': '*', 'useHash': false}">....</div>
// Portfolio gallery you wish to add in the demo - Sort destination
<div class="row portfolio-list sort-destination" data-sort-id="portfolio2">......</div>
* Note that I also defined 'useHash': false in the sort plugin options. This is needed when using multiple sort plugins in the same page to avoid conflict.
2) Regarding background with circular effect: The effect is attached to image background. We not include images in the template files due to copyright issues. We use premium images in our preview and we can not redistribute them. You can find the image here:
http://preview.oklerthemes.com/porto/8.0.0/img/demos/digital-agency-2/bg/bg-1.jpg
But note that if you have plans to use that image in your website, you should buy the license. If you need the link to purchase that image let us know and we can send for you.
We hope this helps!
Let us know if you need further assistance.
Kind Regards,
Rodrigo.
If you are satisfied with Porto HTML and our support, please leave your comment and rating on ThemeForest downloads page. That helps us a lot: https://themeforest.net/downloads