Live Reload, Hot Reload, and Remote Debugging all unavailable

Why is Live Reload, Hot Reload, and Remote Debugger all unavailable? I've tried

1. Reloading JS Bundle
2. Restarting the simulator
3. Restarting packager
4. Restarting packager and clearing cache
5. Resetting the simulator
6. Restarting the computer

Prior to this, everything was working fine. I'm relatively new to the React Native development environment. Is there a place to look (a command or a log file or something) that may have more information figure out what the issue is?

For reference, my app was created using the create-react-native-app command.

I solved my own problem. For some reason the .expo/settings.json had dev: true even though this wasn't reflecting anywhere in the UI. Diffing file trees of the current project with older versions solved my problem.

4c4
<   "dev": false,
---
>   "dev": true,