Problem with prices when check out item

I have a plugin CURCY – WooCommerce Multi Currency premium version. I have a problem when trying to test check out using a foreign currency. The current default currency is IDR. Let’s say I set the price for USD at 20. When converted to IDR it should be around 337,000 thousand Rupiah (IDR). But what is converted is around 200,000 thousand Rupiah (IDR).

In the screenshot I shared, you can see that in USD it is 73.15 but in IDR it is 665,000. If there is a service fee or deduction, I think it is too much to reduce it to that amount.
Can you please help me where the problem is?

Kind regards