I have set the portfolio loading to infinite as you can see in the first screenshot.
But as you can also see in the second picture, it doesn’t seem to work …
I try to disable Redux Framework, so I was not able to access the “theme settings” part.
The press page with settings text underneath/load more button seem to work.
Your page is selected as a template for the portfolio and you do not need to add a portfolio element to the content. If you want to change the pagination you need to change it in
Theme Settings -> Portfolio -> Portfolio pagination