You are posting on a host supported forum and have not reached Air BNB staff. There is huge competition in your area, @Stewart15. You have only 3 reviews with the last one from March 2017. This low level of activity will cause your listing to drop to the back of the search results. I tried to search with narrow criteria, but still there are too many other listings.
When you first list, Air BNB system will bump the new listing to the top to help get the ball rolling. If you have few guests due to competition or availability then your listing will drop back.
There is a great tutuorial on this site about search criteria and how to increase traffic. Look under Help on this Community Center.
If you still believe there is some error in the Air BNB system, contact Air BNB.
Here is a guide (found on this site) to contacting them. https://community.withairbnb.com/t5/Help/Contact-Airbnb-A-Community-Help-Guide/m-p/16165#M728
Hope this helps!