We are aware our Author Portal site is currently unavailable and we are working to bring it back as soon as possible. Please accept our apologies for any inconvenience caused.
UPDATE 10th February: The Author Portal page is now available again but we are waiting for the security authentication to be reinstated. Please continue to utilise the alternative suggestions below until this is rectified.
In the meantime if you are the author of a published paper and were trying to access the page to obtain a SharedIt link we can offer two alternative methods.
1. If you have access to the full-text article on SpringerLink or nature.com then there is an option to get a SharedIt link at the bottom of the article page by clicking on the "Get shareable link" button:
2. If you do not have full text access then please email details of the article(s) - DOI and/or full title - for which you seeking a SharedIt link to firstname.lastname@example.org and they will reply with the link as soon as possible.