Happened to me as well. Earlier Community Edition used to login to a workspace. Instead now it goes via Account Console and having to signup to AWS Trial and Create Databricks workspace via account console.
I wasn't able to login to https://community.cloud.databricks.com/login.html? - Even after Authentication.
I started fresh registration, signed up for trial. Created new workspace.. Thinking it'll try map to my old s3 bucket in backend or somehow I'll get access to old snapshot of my notebooks.. But in vain. I can't find those notebooks/folders.
Can Databricks help me recover old workspace? I don't even remember the workspace id though.