To edit your review, please log in to your account and go to https://greatnonprofits.org/users/profile. This will bring up your reviews and you will see a button below each one that says “Edit Review.”
Note that if it has been more than three months since you posted your review, you will not be able to edit it. You can write a new review that will be displayed in a thread with your old review. Or if you prefer, you can unpublish your review (simply click the “Unpublish” button beneath the review on the “My Reviews” page).