Help & troubleshooting for network issues, including connecting your device to your home Wi-Fi network, connecting to public networks, troubleshooting wireless issues & ethernet connections, and optimizing streaming performance.
The "boxes" within Roku are known as Roku channels. Most people would probably call them apps. Just because you have a channel installed on your Roku doesn't mean you'll have access to any of its content without paying an additional fee (like Netflix) or using a cable/TV subscription (like Spectrum). If you stopped paying for your Netflix or dropped your Spectrum TV package those "boxes" would remain on your Roku, but they wouldn't do you any good.
By the way, the Netflix button on your remote is just a shortcut that takes you right to the Netflix channel. It's no different than using the remote to highlight the channel and then pressing OK.