Hey Mason,
Thanks for reaching out to us!
This is actually a known bug in our system that should be addressed in the next update of our plugin. When switching to a different country, the states for the US persist in the select box that displays to the right of the new text field. For now, you can just fill in the needed Provinces in the text box.
There isn’t currently a way to add a select box of the Canadian provinces within the plugin settings. If you would like, you can add this suggestion to our UserVoice page for consideration in further developments.
Thanks!