Hello @Coracle,
Thanks for writing in!
The excerpts were displayed using this line:
$excerpt = ( $show_excerpt ) ? '<div class="x-recent-posts-excerpt"><p style="color:initial;">' . preg_replace('/<a.*?more-link.*?<\/a>/', '', cs_get_excerpt_for_social() ) . '</p></div>' : '';
If you want to display the full content and not the excerpt, you will have to replace it:
$excerpt = ( $show_excerpt ) ? get_the_content() : '';
For your reference: https://codex.wordpress.org/Function_Reference/get_the_content
Please note that custom coding is outside the scope of our support. Issues that might arise from the use of custom code and further enhancements should be directed to a third party developer.
Reminder: We are only giving your an example for you to start your modifications. Any results from this modifications might cause any issues sooner or later. Please be advised that heavy modifications of any feature or functions in the theme is beyond the scope of our support. Any results that will complicate things or even messed up the page will be your sole responsibility.
Thank you for your understanding.
March 2021 Update: The above code example has been adjusted to account for a change to a function name.