Hello @stephenm,
In order to update the no job text, you will have to use the SJB templating feature to remove the file from the following pathways:
simple-job-board/template/v1 or v2/listings/content-no-jobs-found
Note: v1 is for classic layout and v2 is for modern layout, please select v1 or v2 according to your settings configuration. Please do not change the plugin core files directly instead use the SJB templating feature. For templating, visit the following link and see the Templating & Configuration section.
Link: https://ww.wp.xz.cn/plugins/simple-job-board/#description.
Feel free to reach out if you have any questions.
Regards,