BUMP BUMP
They have "basically" run out of supply of cash.
Supposedly they fund the "Instant" transfers using their own money. Then they wait for your own money to process through regular means. Which means...effectively, you are waiting on others peoples money to clear before they can recharge their own service for "instant" transfers.
What worries me is that some claim they have been waiting 3 weeks....which is not shaping up to be a good situation.