I was having all kinds of difficulty this afternoon trying to open a ticket for Late Delivery/Missed Standard and kept getting error messages that said my tracking number did not exist so I left for a few hours and came back to it only to find: https://www.canadapost.ca/cpo/mc/errors/maintenance-unscheduled.html
and the following is a screen cap from Twitter.
So, don't go beating your head against a brick wall. It's not you, it's them.
