Hi,
Serene does not currently support use of the read more tag. We’ll consider adding support in a future update. In the meantime, you can use a child theme to add support for the more tag manually.
If you are not currently using a child theme, the following plugin will allow you to easily create one:
https://www.ads-software.com/plugins/child-theme-wizard/
Note: After activating a child theme, you must reapply your desired configuration for your menus and widgets in Appearance>>Menus and Appearance>>Widgets, respectively.
After you’ve activated your child theme, place a copy of the parent theme’s content.php
file into your child theme’s directory. Then edit the file by finding this line:
the_excerpt();
and replacing it with the following:
the_content('read more...', FALSE, '');
Let me know if you have any questions.
Best Regards,
Dustin