I had a similar problem several months ago, and ended up patching the plugin to allow me to override the cache. See https://ww.wp.xz.cn/support/topic/plugin-wp-web-scraper-cache-override-a-solution-to-cache-not-expiring.
Hope that helps.
-Jesse
I’d happily upload my functions.php if someone can tell me how to attach a file to a post here.
