For some reasons, RefWorks' Features cannot work properly.
Here are few tips to resolve the problem:
1. Make sure that you are going directly to https://refworks.proquest.com to access your account not through a library portal or VPN;
2. Make sure you are not blocking cookies or third-party cookies;
3. If you have an ad blocker added to your browser disable it;
4. Clear out your browser cache, offline files and cookies;
5. Close all browser windows and try again.
You cannot install write-N-cite? Try these tips.