Thank you for your support and help. I am amazed that Airbnb have no way of recognising that residency is often different from citizenship. I am sure that everyone knows at least one person who was born in another country.
I found an email address for the ODR department that you sent me the link for. so I have emailed them.
I have also called the UK VAT helpline, but so far they told me they were too busy and cut my call off, but not before telling me that I only need to pay UK VAT if my eligible earnings exceed £85k. Seeing as Airbnb only charge VAT on Service fees I will never earn this much, even in my lifetime, let alone in a year.
I have also raised a case with Airbnb Support to recognise my residency and they closed it within 20 minutes, after telling me that they would not look into it for me and to raise a Feedback request. This is a new record for speed in stonewalling me.
I will not give up as a matter of principle but the longer it goes on, the lower my opinion of Airbnb becomes.