I am using the Sibell viewer on two locations. Both have been working fine but one location has  started the following issue

When I am viewing multiple cameras on location two, I see all of the cameras fine. If I select any of the viewable cameras to full screen, the screen expands but there is no video until I remove the full screen and go back to viewing multiples.

This is happening  while I am on site (not looking remotely) and it does it with local cameras and remote cameras as well.

The two top images and the road on the bottom left are local cameras here on the local network. The camera with the car on the bottom right is a camera across town at my home. All 4 images will not expand to full screen images.

Any advice is appreciated

Dan