My two children interviewed on Saturday, but still have not been approved on the website - in fact, it doesn't even have a check next to "Have interview, and wait for approval" step, and still lets me reschedule the interview even though the time has passed and we actually did the interview.

The CBP officer said we should get approved within 24-48 hours, but it has now been 5 days. I tried calling the Dulles enrollment center but it just goes to voicemail. Any ideas? Keep waiting? Stop by in person? Was hoping to get approved before a trip next week.