The problem has been fixed and all stores are functioning normally. Thanks for your patience!
Posted Oct 26, 2015 - 09:45 EDT
Identified
Canada Post has been notified and their operations engineers are currently working on a solution.
Posted Oct 25, 2015 - 19:19 EDT
Investigating
We are aware of reports that shipping estimates at checkout are not working for some merchants using Canada Post. Our operations engineers are looking into it. Sorry for the inconvenience – we’ll have a solution for this soon!