How can I ask for a deadline extension to my review task?

If you have accepted a review invitation, but do not think that you will be able to complete a review by the agreed date, please let the editorial team know as early as possible. To do this, click ‘View’ on the relevant review. This will take you to stage 3 of the review:

At the bottom of this page, you will see the ‘Reviewer Discussions’ tab. Here you can add a reviewer discussion: 

Add a discussion between yourself and the editor. In the body of the message, you can make your request. 

Alternatively, please reply to the original invitation email you received and make your request there.