Belfast results are not shown in search

[mfsbo]

Report issues related to search results through https://www.mapbox.com/geocoder-feedback/
** The above link to geocoder-feedback** is not giving any opportunity to feedback on search results being not being returned.

Context

While using the tool we put in BT6 9LF as code to view the results and no features were returned. Can we be directed to correct place to raise this issue and if not let us know why the address is not found in results