How do I change my payment info?
You can update and change your payment information in the payment section of the app.
I got charged for a ride I could not end
Don’t worry, we’ll take care of it. Our customer support team is here to help you! Just send us a message with the email registered to your TIER account, c...
What payment methods are accepted?
Our service supports credit cards by Visa, Mastercard, and American Express as payment methods. In Germany and Austria, Paypal is also supported. 
What is pre-authorization?
Before each ride, our system performs an automatic check to determine if there is enough money available on your payment method. This amount is never charge...