Please note that verifying your e-mail is one-time process, and repeatedly clicking on the verification link on the email will result in errors. 

Should have previously activated your e-mail, please go straight to https://journals.sagepub.com/action/showLogin to login with the credentials you have created during the sign up process. 

Alternatively, please contact onlinesupport@sagepub.co.uk, and ensure you quote the email address you have used to register a profile with.