Follow the instructions shown in this link.
See this link for more information on this problem
As an example, I have jumped to the Bench Restaurant site using the link on the main page of the APC site. To exit the Bench Restaurant site and go back to the APC site follow the directions in this link.
Similar to the no back button above. Close each tab from right to left until you get back to the APC page or if available press the back key.
Select the 3 bars icon (often called the hamburger icon) just to the right of the APC logo.