Bitcoin Rounding Error

I’m using WP 3.8, WooCommerce & Wootique along with this plugin. All versions are updated.

I have a rounding error problem as you may notice in the picture below.
https://img841.imageshack.us/img841/5016/fsoz.png

I’m not sure whether WooCommerce, Wootique or this plugin causing it.

Please note that I changed WooCommerce Settings –> Catalog –> Pricing options –> Number of Decimals to “4”

I don’t want any rounding in decimals. Inspected some codes in the plugin such as BITCOINS_AMOUNT but didn’t work.
Any ideas how to solve this problem?

https://www.ads-software.com/plugins/bitcoin-payments-for-woocommerce/