Discovery Plus Buffering Issue

Hello,

I subscribed to Discovery+ to watch Shark Week content this week. I can access the app and log into it perfectly fine. However, anytime I try to watch anything, it just shows a black screen with a white buffering circle in the middle of it. Never actually loads and plays a show. This is across multiple TVs in the household. I have a CISCO Contour box that updates regularly. Also, other streaming services, such as Netflix and Amazon Video are working fine. Any idea if there's a problem with Discovery+ or am I doing something incorrectly?

Thank You for your help.