Since the last update, my units are completely messed up. Despite repeatedly changing the units settings to metric values, It still displays Miles instead of Kilometers when I want to register a fillup.
The problem is both on the android app and on the full site.
This appears to just have been a label mistake. I have updated the label on the website so please give it a try now.
An app fix will take a new release to resolve. You should still continue to use the App as the field is just labeled wrong. If you have your car set to 'km' in its settings then kilometers is what it is accepting.