Auction house not available what to do?

I have a question about Forza Horizon 4 on Xbox One's. I've had the jz game for a long time and everything has always been great. But then at some point I realized that I no longer had access to the auction house. At first I was surprised, but thought it would go away again, but it couldn't. Unfortunately, the Autionshaus is important so it would be cool if someone can help me. Why is it gone? How do I get it back?

Updates all on it?

XBox live up to date?

Are you online otherwise?