Finally other people are reporting this issue.
I called Roku, Spectrum and multiple networks such as ESPN/ABC about this issue and no one was helpful. Each company kept blaming the other.
After month’s of phone calls and tech support help with Spectrum, the issue was finally revealed by one of the Spectrum Tech Support managers.
The problem is only with Spectrum!
Spectrum now only allows access to network apps on devices such as Roku or firestick ONLY if you are on your home network and are using your home network login for the TV subscription.
If any device is connected to a Spectrum network that does not have a cable subscription, the network app (abc, fox, espn, etc...) will automatically sign the user in and they will NOT be able to access any content unless they sign up with some type of spectrum cable subscription.
Spectrum customers can no longer access content on network apps with devices such as Roku and firestick while using their spectrum tv login credentials while away from home. If away from home, the network apps along with the spectrum tv app can only be accessed on a phone, handle held device, desktop or laptop.
For example, I have Spectrum internet without a tv subscription at one house and a tv and internet subscription at the other. I can no longer use my cable login credentials at the location that only has Spectrum internet to access any network apps or the Spectrum tv app on my Roku or firestick. The apps now automatically log me in to the internet only Spectrum account, not allowing me access to any content. However, I am able to access the network apps with those credentials while using a laptop, desktop, or phone.
The good news is, although Spectrum does not allow this type of access anymore, other companies such as DishNetwork still do. I have access to a DishNetwork account and I’m able to use the credentials with this account to access network apps on any device no matter where I am.
Not sure why Spectrum got greedy and took away this access from its customers. One of the things I loved about them is that I used to be able to access any channel that was in my subscription no matter what device I was using or where I was located. Now that they have restricted this, I will no longer be using their cable services.