Sorry you had not received a response yet.
The issues connecting to your Spectrum TV service, banking website, and various apps, can be caused by the VPN. The best way to tell if it is the VPN, is to see if the issue resolves immediately after turning the VPN off. If so, it is most likely just the VPN and not a conflict between the other security programs.
These types of issues can arise under certain circumstances when using a VPN. One thing you can try: Manually choose the VPN server, and pick one within the United States.
Your bank, Netflix, and other services may block the connection if it appears you are connecting from a different country.
If you have not already, I would check out their help center which can walk you through modifying settings to resolve certain issues:
You can also reach out to them at email@example.com
The issue with Adblocker sounds unrelated to the VPN issue. That could be a conflict between multiple security programs or browser extensions. I would check your browser extension in Chrome.