The issue is that you haven’t add an affiliate slug to your affiliate link.
This is not optional and you should follow the guides you will see below the field.
(One word, no spaces and no special characters)
After that it will work just fine!
This is very strange because I can’t imagine any reason a theme to make your site to not be indexed.
The only thing I can think of is to check you robots.txt and the WordPress option “Discourage search engines from indexing this site” to be unchecked.
There is no such ready made header style at the moment. This was done custom by the client.
If you don’t have a developer that can help you can contact us to our email and we can send you a quote.
PokaTheme doesn’t use Yoast breadcrumbs, it has it’s own breadcrumbs functionality and you can find it at: inc/addons/breadcrumbs.php
You can always disable PokaTheme breadcrumbs from Theme Settings and add your own breadcrumbs if you want!