Online Account Access Troubleshooting Guide
Steps to Enable Cookies
In order to use online account access, your browser must accept session cookies from the server. Follow the steps listed below to make sure your browser will accept cookies from online account access.
Choose Safari / Preferences from the menubar.
Click on Security in the top of the window, next to Accept Cookies select either Always or Only from sites you navigate to.
Close the Preferences window to return to your browser.
Screenshot and instructions based on Safari 6. Other versions of Safari should be similar.