martiniro

Solved.
I installed Code Snippets and I used the code from here:
https://docs.woocommerce.com/document/add-a-custom-currency-symbol/
And it worked.

The code I used is bellow (notice the space before and after LEI currency symbol):

add_filter( ‘woocommerce_currencies’, ‘add_ron_currency’ );
function add_ron_currency( $ron_currency ) {
$ron_currency[‘Romanian LEU/LEI’] = __( ‘Romanian LEU/LEI’, ‘woocommerce’ );
return $ron_currency;
}

add_filter(‘woocommerce_currency_symbol’, ‘add_ron_currency_symbol’, 10, 2);
function add_ron_currency_symbol( $custom_currency_symbol, $custom_currency ) {
switch( $custom_currency ) {
case ‘Romanian LEU/LEI’: $custom_currency_symbol = ‘ LEI ‘; break;
}
return $custom_currency_symbol;
}