I have updated my cover, why is my thumbnail image not updating?

The thumbnails are only created by our system when you initially upload your files for the first time. Do not worry if your thumbnail image is different to the files you have recently uploaded, you can download and check the associated files to make sure! See our guide here

If you email our customer support team with the ISBN/s you wish to update, we can manually submit a request for our system to re-generate the cover thumbnail/s