A friend wanted to share his board with me just for a day. Once he did this, the board is taking one of my 10 boards. He has removed me from his team and made his board Private. He is also not on my team. Now, the board now shows as [Lock icon] Private Board. But the board is still taking one of my 10 boards. I have logged out and back in with no change. How can I completely remove the private board and free up one of my 10 boards?