NFL app has no audio, only this application

Had the exact same problem with the NFL app only. But it is fixed now. I have a new, 2023 Roku Ultra that is connected via a network cable. It's connected via HDMI to a 63" Panasonic TV that is 12 years old. I bought the Ultra because the NFL app was not streaming correctly on a Fire Stick or on my Xbox One. The Roku Ultra is the way to go for streaming the NFL app, no question. But I did have problems at first. The fix was to insure via the Roku settings that I had the latest version of the NFL app installed. You can follow this link to see how to do that, step one of three.

https://youtu.be/cARcDDMWB1k?si=N97x947eichUa4Q7

I followed the first step but the app still had no audio. I was troubleshooting it at night and ran out of time to continue. Shut everything down normally and the next morning powered the TV and Roku back up and voila, the app had audio. The app is working perfectly now. Odd that it didn't respond to the first step right away but it's been perfect for 5 days now. Hope this helps someone out because it was a very frustrating problem for me. I use the NFL app a lot for game replays since I am signed up for NFL+ premium.