To answer the question about how to suppress a hashtag for topics you are not interested in:
At the top of your Daily Summary or Digest, under the green JewishGen banner, click on the blue words: JewishGen.org Discussion Group.
This will bring you to the main page. Click on #hashtags in the left-hand column (or, if you are on a mobile device, you may need to click on “more” first, then on #hashtags)
The hashtag chart should appear. Click the “mute” button on any topic you no longer want to read about. You can always unmute it later if you wish.