You can keep track of your pledges through your Backed Projects page.
In the active pledges section, you'll be able to see your current live pledges, the amounts you've decided to pledge, the rewards you've selected, and more important details. If you'd like to change a pledge amount or reward selection, just click on the project title next to the corresponding pledge and select edit next to your pledge amount.
The successful pledges section lists all pledges for which you've already been charged. If you selected rewards, you can sort this list by estimated delivery date — and you can even select "Got it!" once rewards arrive. Under the ‘Status’ column you will also be able to see the latest status for your reward, if that information has been provided by the creator*. If the creator used Kickstarter’s Survey tool you can view your survey response by clicking the round + sign button to the right-hand side of the project name.
The unsuccessful pledges section documents all of your pledges that won't be charged, in addition to any pledges that were refunded. This includes projects that were not successfully funded, pledges that you decided to cancel, as well as pledges for suspended projects.
To locate your backer number for a successful project, you can do so by either clicking the round + sign button to the right-hand side of the project name, or by visiting the project page. On the project page click the “View Pledge” button and within the pop-up you will be able to review the details of your pledge, including your backer number.
If you’ve backed a project that you can no longer find under your active or successful pledges, you’ll want to look for it within the unsuccessful pledges section as the pledge may have been refunded by the creator or suspended by our team.
*Please note that the reward status information isn’t currently available when viewing pledge details through the Kickstarter app.