Note that ECAS only for paper applicant. So, If you clicked the status on ECAS it will show the processing steps. If you are scheduled for Oath, it will show you step 4 as following:
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1. We received your application for Canadian citizenship (grant of citizenship) on Month DD, YYYY.
2. We sent you correspondence acknowledging receipt of your application(s), and a study book called Discover Canada on Month DD, YYYY.
3. We started processing your application on Month DD, YYYY..
4. We sent you a notice on Month DD, YYYY to appear and take the oath of citizenship at the citizenship ceremony to be held on Month DD, YYYY at HH:MM PM. The notice you will receive will be your official confirmation of your appointment. If you have not received this notice prior to the date of your scheduled appointment, please contact us.
5. You became a Canadian citizen on Month DD, YYYY.
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Now I have a question for you. How did you make it and called IRCC, I have been calling them for 4 days but only machines answer me!