You do not need to sign in or sign up to anything to receive a link to complete feedback for your peer.
Your peer/colleague will nominate you to complete feedback and you will receive an email similar to the below with a link to complete.
Click this link and you will be redirected to the feedback page.
I was completing the feedback but the next page asked me to sign in. What do I do?
If you were in the middle of completing feedback for a colleague and the next page you land on is a sign in page, your session has timed out.
To resume, click back on the original link in the email you received, and this will take you back to the page you left off from.