The problem is probably due to the fact that ACF does not store date fields in a standard date format. The format used it YYYYMMDD. At a guess I’d say that you’d need some way to use this format for the condition which would mean getting today’s date and converting it to use in your condition. Not knowing anything about BB I can’t tell you if that’s possible or not.
Welcome to the Advanced Custom Fields community forum.
Browse through ideas, snippets of code, questions and answers between fellow ACF users