I found the issue. This is a component that uses it's own items, categories, and tags. NOT JOOMLA's.
Bummed, I just wasted money since I don't want to use this way. I want to use Joomla articles, categories and tags.
Hi Patrick
Thank you for feedback us
JUX Portfolio Pro is a product that uses separate categories and tags, with a great front-end interface
You can try using it, I think it will make you satisfied
Thanks