You may modify or cancel any booking online in your customer's area. just click on "start" and follow the steps. 

To avoid our service fee (see "our prices" section), please do your modification or cancellation online, in your customer's area. Those modifications are only possible with 12h notice before your scheduled meeting time. If it's less than 12h, you'll have to call directly our drivers on +33(0)609739067. 

Attention : a 45€ penalty fee will apply if you modify or cancel with less than 90mn notice. 

If your modification leads into a change of fare, you'll be either reimbursed if you paid more than you should, or you'll receive a link to be able to pay online if there is an additional payment required.