Though the images are saved in myHaley, it is up to the social media sites to scrape for the new meta image and text. They only do this every couple of days. You can force them to scrape individual job ids that you want to share by running them through the following debugger links:
Facebook: https://developers.facebook.com/tools/debug/ Just input the url for the job you’re trying to share and click Debug. It may say it has never seen that and then you will need to Fetch the new data again.