Okay guys, I got it fixed.
First, I tried it on the 4900, while the Classic was switched off ofcourse. And viola, recording and watching another channel worked.
Booted up the Classic but still got the error. So, I did a backup within the Buzz app, cleared data in device app settings. Restored backup and it's now working again.
I remember trying 2, yes 2,recordings and watching another channel and it worked. So maybe this caused the Buzz app to "trip" making it not recognize my sub having multiple connections. Mind you, it worked on a different service so maybe recording 2 channels simultaneously causes a glitch.
I noticed after restoring I was on the default theme even though dark mode red was enabled which is what I use. So I had to select default and then had to choose red when the Buzz app reopened.
Stream format was on Auto even though I use TS. I also had to re-enable one button record.
I also saw a few new categories in my channel list. I've logged out of the Buzz app and rebooted many times and these categories never showed up. Normally it would but the clearing of app data and restore brought them to light. It wasn't like that before.
Anyway, thank you to everyone who offered assistance and opinions. Really appreciate it.