Hi Dave, the plugin uses the WordPress Scheduled Events: https://codex.ww.wp.xz.cn/Function_Reference/wp_schedule_event
if you know how to edit the plugin code, you can change it there. You can set jobs to run hourly, twicedaily or daily
Hi Bob, yes, that was it. The sites all have different themes, but they were built by the same agency and they all a snippet that is supposed to rewrite external URLs to add the target attribute and some GA tracking information.