1st Generation Apple TV apps not working

A 1st Generation Apple Tv was released in 2006 and does not support Apps at all.

Do you maybe mean an Apple TV 4K first generation from 2017?

Please correctly identify the Apple TV you have. click here ➜ Identify your Apple TV model - Apple Support

Also, please explain what happens when you try to access the Apps that aren't working. Do they not load? Show a black screen? Start, but won't play anything? Something else?

Seems like Bloomberg has issues relatively often. There's no real way to fix that, except wait for Bloomberg to address it form their side however.

https://www.bloomberg.com/help/?s=Apple+TV

You may have also reached the maximum free streaming time it allows for non-subscribers. 30 minutes of free streaming a day.