Are you using the Brave web browser? A recent update to Brave has caused this issue when using Xposure™ with the "Brave Shields" feature active on the site.
You will need to turn off Brave Shields for the Xposure™ domain name. You can do so in the top right side by the address bar. You will see a lions head icon at the right side of the URL bar. Click the icon and a drop down menu will show. You can then turn the shield down which will allow Xposure™ to load all the needed tabs.
