Avoid changing several settings at once. First note the device, selected host, app version and exact action that failed.
What can you still open?
| Observation | Follow this path |
|---|---|
| The host works locally but another device cannot reach it | Connection troubleshooting. |
| Yuri loads, but a session cannot use its execution service | OpenCode readiness. |
| A repository operation or isolated checkout fails | Git and worktree checks. |
| Only the public URL fails | Compare direct access with the proxy checklist. |
Collect the smallest useful evidence
For a CLI host, inspect yuri status and yuri logs. For desktop or mobile, record the component versions shown in About and the visible error. Use the actual address from the running instance; desktop ports need not be 3000.
Preserve the failing request and unsent draft before restarting. After one targeted change, repeat the same action so you can tell whether it helped. If reporting a problem, include the expected result and reproduction steps, with credentials and pairing links removed.