All communication with the reviewers and the handling editor is done on the Review Forum of your manuscript. To access the Review Forum see How Can I access the Review Forum?
After all reviewers have submitted their reports, the handling editor will activate the Interactive Review Forum, and thus, give you access to the reports. To see the reviewers' comments click on the desired Reviewer tab and scroll down to read and respond to comments.
If you cannot see the Reviewers' comments, please check that you are using a compatible browser.