Nature access problems

Nature Publishing Group are having intermittent problems with their online platform - sometimes they recognise us and allow access to articles, other times they don't. This is a worldwide problem and they are working to fix this. Meanwhile, just try to access the article a bit later and you may get through.

This is the statement from NPG:

The nature.com website has had periods of instability over the past few weeks due to an increase in traffic to the site. This has caused the backend database that manages access to content to stop responding to requests. The nature.com technical team has increased capacity by adding additional web servers and optimizing database queries. We have seen improvements in performance since these changes were made. However, there are still occasional problems during peak traffic times and additional upgrades are being applied to help stabilize the site. One of the results of these
problems was that site license customers were intermittently not being recognized as subscribers, and receiving an Access message. We apologize for any confusion this has caused.