Issue has been Resolved - 1/2/2018
Goldman Sachs Bank has been renamed to 'Marcus by Goldman Sachs'. Our team is working on accommodating these changes. Please reference this post for updates when the development is completed.
If you have not already done so, please log in at www.marcus.com and enter in your email address associated with your accounts to register them. Once completed, edit the login information for your Goldman Sachs setup in the Personal Capital application to refresh the accounts. The Email Address should be the new Username for marcus.com.
if you are still having any issues, please reach out to Customer Support.