@Rhona3 A few people are having this problem and I do wonder if its anything to do with airbnb having to comply with EU regulations on the 1st Jan.
You are using professional hosting tools but you're not registered as a professional business to comply with the EU regulations.
The only thing I can come up with is switch off hosting tools and then on again to see if it clears the problem, and if that don't help fill in the business details section and see if it clears the problem.
Your business details can be added and removed just like hosting tools can be switched on and off, go to your account settings and click settings