[Plugin: WooCommerce – excelling eCommerce] Last update: currency display issue

After last WordPress and your plugin update, the currency I’m using displays in a strange way.
I’m using Polish currency, which should have “z?” as the currency symbol, near each of the products.
Unfortunately instead of “z?” – “?z” is displaying.

What to do to change that?

https://www.ads-software.com/extend/plugins/woocommerce/