You can, if the campaign is still ongoing, but we recommend against it, because the project owners are counting on your help! If you want to cancel a donation, you must do so within the time period specified by the project creator.
Connect on Ulule, then click on your username in the top right corner. Click on the contribution you want to cancel or on the more link if the the contribution is not one of the last you made.
On the detailed contribution page or form My contributions page, click on the Cancel icon on the right of the desired project.
If you supported a EUR currency based project using a bank card or Direct Debit payment (Sofort and Giropay): the amount you pledged will automatically be refunded on your bank card.
If you supported a non EUR currency based project or if you used PayPal, you will never be debited of this amount.