Full screen view on Browser not available

For the last 2 days, no matter which browser I use, the icon for making the video stream full screen stream video over Directv's streaming service.  Prior to this, there always used to be a square shaped icon at the bottom right corner of the video stream,  clicking on which makes the stream show full screen on my PC. I am using Windows 10 and the latest versions of both Chrome and Edge browsers but the same issue exists on multiple PCs and every browser.

I tried chatting with the support person who refreshed my account but still no fix.

At present, I'm restricted to viewing a small view of every channel streamed over the internet using Directv service. Will appreciate if anyone has any insights. Clearly this is a not PC specific problem or a browser specific issue. I've confirmed the issue on both my laptops.