Hello, Namaste,
1/ About font, as we can see, it is Jost https://prnt.sc/00ckGMnms2fm
Please provide an example where it is Roboto.
2/ The <!--more-->
can’t work as you expected, and it is independent of our theme.
You can create a static block with the desired content and Elementor elements, and after that add that block into the Category description area (Text tab) using shortcode https://prnt.sc/B3Mk2Rre0hxo
Kind Regards,
8theme team