Signed-in users can also find this guide, with screenshots, under Help in the app.
The notice page shows the plate, the reason, where it happened, the officer's notes and photos, and the amount due. It works in English, French, Chinese, Spanish and Thai.
Open the link in the email (or scan the code on the notice).
To pay, select Pay … by card and complete the secure payment page. The notice closes once paid.
Think it's a mistake? Under Think this is a mistake?, describe what happened, enter your email and select Send to the office. Payment is on hold while they review it.
The office answers by email. If they accept, the notice is cancelled.