Store Credit by AffiliateWP

Plugin link: https://affiliatewp.com/add-ons/official-free/store-credit/

In file wp-content\plugins\affiliatewp-store-credit\integrations\class-woocommerce.php add next code:

if (class_exists('WOOCS') AND $balance) {
    global $WOOCS;
    $balance = $WOOCS->woocs_exchange_value(floatval($balance));
}

This edit is inside another plugin's file, so a plugin update will undo it. Write the change down, and re-apply it after every update of that plugin — or ask its authors to include the fix on their side, which is the only version that survives. If the change is inside FOX itself, tell us: a fix that has to be re-applied by hand is a bug on our side, not a solution.

Shortcodes, functions, actions and filters reference for FOX WooCommerce Currency Switcher