Multiple currencies

Hi, I have been using your plugin for a while and it’s been great. But now there is an issue – can you tell me if the plugin works with CURCY? (WooCommerce Multi Currency Premium by VillaTheme)

I noticed when I use the value fields in your plugin, it calculates the wrong shipping. My shops base currency is SEK but for example if a customer from the US checks out and pays in USD, the plugin will calculate the shipping cost in USD, but I entered all the values in SEK/kr.

For example: the order value is 80 USD. Then the plugin seems to calculate shipping on the order value of 80 SEK.
Can I fix or set this up correctly somehow? I want customers to have the option to use my base currency SEK or change to another currency like USD if they wish.

Thank you!