Taxes not being charged correctly.

Hi,

I have a store that integrates A+ and MP. A+ appointments are booked as using shortcodes on MP product pages.

For some reason the correct tax rates are not being charged on orders in country (Canada). It seems as if the shipping step in the checkout process is only requiring the users email and so they are not given and opportunity to specify their province so the correct tax rates can be applied.

Can anyone suggest a fix for this?

Thanks!

-R