I saw a mistake in the material. Where do I report?

If you happen to spot an error on one of our PDF files, we kindly ask that you report it by following this link: https://docs.google.com/forms/d/e/1FAIpQLSeXMZZvM-8X_AfuH_QVSW2oWcU76Np9FclV3pQVs-XRJcDt1w/viewform.

Our academic team will review the issue and promptly correct any errors found before reuploading the corrected file onto our system. We appreciate your assistance in helping us maintain the highest standard of quality for our materials.