A public contact email for qiblah.si has not been published yet. The site owner is setting one up, and it will appear on this page once available.
Help with directions and accuracy
There is no contact form on this site, so nothing you type here is sent anywhere. In the meantime, the FAQ and method page answer most questions about accuracy and calibration.
If you believe a city bearing is wrong, you can check it independently with the calculator at Movable Type Scripts using the coordinates listed on each city page.