how to set a fixed price

I would like to set a fixed price in Canadian dollars for my gift cards (and some other items I’d like to add in the future) in my WooCommerce shop on my WordPress.com site. This is the sole reason I purchased your Multi Currency plugin. The other merchandise must be listed in USD because that is how my drop-shipper sets the prices, even though I am in Canada.

From what I read in how to set a different fixed price in another currency, I should be able to easily do this by editing my product in WooCommerce. However, when I try to edit the currency, there is no place that I can find where I am able to do this. Am I overlooking something? Is there another step I need to take. If I am unable to do this with the plugin I purchased yesterday, then I’d honestly rather just get my money back and not have this plugin.