Your current setting is the “loopback” address. You’re listening for traffic to this address, and the only thing that can send to the loopback is yourself. This is a safe default, it means only the computer running the software can talk to it. Generally 0.0.0.0 listens on all available addresses. If that doesn’t work, use your local / internal ip.
This ui smells like it’s trying to hide the implementation details, but that makes things extremely difficult when troubleshooting
Devops is a meaningful term