Yellow van rates

I booked with Yellowvan, the confirmation came back as Parishuttle.
I agreed to 36 Euros to be charge to my cr. cd. on the confirmation it says "Total Cost: 36 Eur 14 EUR extra to the driver- ALREADY PAID ( the total amount has been charged on your cr.cd)" Does this mean that I still need to pay the driver an extra 14 Euros? No where did the order form mention anything extra. In fact it says tipping the driver is up to you.
Thanks for any help, this is my first trip to Paris.