I spoke to Smartthing support today. They told me that Webcore will not work with Samsung until webcore updates an API. The issue seem to be happening for the past week.
Error I am getting while login to Webcore dashboard.
there was a problem loading the dashbord data. The the data shown below may be outdated; please logout if the problem persists.
This issue started few days before. I cleared the cache, Changed the dashboard password, tried deleting the webcore instance and created a new blank instance but still I have the exact same error while accessing the webcore dashboard. I have the same issue with the browser (Edge/ Chrome). Everything was working until few days before. Now nothing is working. My Piston are not working. Cannot view or restore them. Luckly I have a backup. Any help from the webcore team in resolving this issue is greatly appreciated. I am using the NEW smartthing APP since the old classic app is no longer supported/available.
I also found below URL from Samsung webpage.