Multi currency – Pay in many currencies

Hi,
thank you for the plugin.

I want to display multi-currency on the cart and check out the page.
so I did enable it in the setting. But it doesn’t appear on the check out page.
The payments are only 2: direct bank transfer and bitcoin.
If I choose the bitcoin currency and put them in the cart and go to the cart page, it disappears.

And also my website is multi-languages, how does it work on multi-languages website? I use WPML.

Thank you