The post title can be changed with this selector. You can use the customizer to add less CSS styles like this https://kometschuh.de/easily-adding-custom-css-using-the-wordpress-theme-customizer.html:
.cat-post-title {
font-size: 22px !important;
}
To change the excerpt “More” text to another text like “…” there is in the Post details panel a settings area for Excerpt settings with the option “Excerpt ‘more’ text”. Please use this text box to write your ellipsis “…” excerpt more.
(We use the hellip “[…]” as default and show a series of dots as ellipsis “…”. This is a little bug ;( )
You can also try the option below “Don’t override Themes and plugin filters” than you use the options coded by your Theme or Theme developer.
Another idea is to overwrite our settings only partially from your Themes settings for the excerpt we had a add-on for our pro version: https://tiptoppress.com/extensions/excerpt-extension/
BTW: Here is a youtube video how-to use and how we recommend to use our widget with SiteOrigin Page Builder plugin: https://tiptoppress.com/how-category-posts-widget-work-with-siteorigin-page-builder/