Currency not displaying

Hello everyone,

I am using the “detailled” version of the short code, in order to display a custom button.

Everything works great, except the currency won’t display. I think it should automatically display EUR after the price of each item, but it doesn’t.
(So I included the symbol € in my item description)

What am I doing wrong ?

[wp_paypal_payment_box email=”myemail@adress.com” reference=”Votre adresse email” options=”Une Question €:25.00|Deux Questions €:50.00|Trois Questions €:75.00|Abonnement 12 Coupes €:55.00|Abonnement 12 Questions €:275.00″ currency=”EUR” new_window=”1″ button_image=”http://alinedelille.com/wp-content/uploads/2016/08/bouton_commander.png”%5D

http://alinedelille.com/index.php/consulter/

Thank you for your help !

https://wordpress.org/plugins/wordpress-easy-paypal-payment-or-donation-accept-plugin/