Hi @croswell177; welcome to our Community!
I'm sorry to ask, but what plan are you on currently and when was the folder deleted? Can you locate the deletion event in your account's events page perhaps?
I'm not sure if you're aware, but Dropbox Basic and Plus accounts can recover any file edits or deletions made within the last 30 days while this extends to 180 days for the Professional and Business plans.
As for our Rewind feature, note that this is a tool that lets you undo a large number of changes at once while it’s most useful when a major data-loss incident occurs, like if a virus infects your account. Currently, this feature is available to Dropbox Plus, Professional, and Business accounts.
NOTE: If those deletions took place outside your account's recovery window, upgrading to an account with larger recovery window won't help in restoring this folder as your new version history will start at the date you upgrade and won't work retrospectively.
I hope this helps to some extent and please keep me posted!