If you find yourself needing to cancel a review promise rather than complete it, you can follow these steps to let the author know why.
Keep in mind that a late review is better than a cancelled one and too high of a cancellation rate can result in you not being able to attain new ARCs. Use this feature sparingly.
Here's how to cancel your promise
You can cancel your review promise for an ARC on the same page you'd leave a review for it. Head to the ARC on Booksprout and click on step 3.
Once there, you should see two tabs below. Click on the "Cancel ARC Promise" tab.
Fill out the form. Once all the information is filled in, click the red "Cancel ARC Promise" button and we'll pass that information on to the author.