Thank you for reaching out to us. Can you provide a little more info and screenshots? Are you not seeing the sidebars you created under the widgets?
Are you able to edit the sidebars when you have just Genesis activated?
Sure, and yes I am not seeing the sidebars.
I can “edit” them from the Simple Sidebars area but they simply don’t show up in Appearance>Menus or Appearance>Customize.
Screen shots of relevant areas: https://imgur.com/a/4N09tpc
Can you go to your Dashboard ==> Appearance ==> Widgets and see if you see the blog sidebar you created?
Happy to explore any other theories. Update to latest Genesis has not changed anything for me.
Thanks so much for the support.