Direct answer
One subscription may work on multiple devices only if the provider plan allows it. Device limits, simultaneous connections and traffic quotas are provider-side rules, not Clash client settings.
What to check first
Each platform has its own permission model. Windows focuses on ports and security prompts, macOS on chip architecture and system permissions, Android on VPN/background behavior, and iOS on App Store proxy clients.
- Match the package to the device platform and CPU architecture.
- Grant only the permissions required by the selected feature.
- Compare the tutorial screenshots with the client version you installed.
- Use platform logs or permission panels when the GUI looks normal but traffic has a problem.
Recommended handling
Keep the troubleshooting path narrow: confirm the profile, confirm the selected node, test Rule mode, read the log, then change only the setting that matches the observed status message.
Practical notes
- Change one setting at a time so the result is attributable.
- Use logs and timestamps when asking for provider or community support.
Changlian
When you need a subscription URL, renewal or provider change, open Changlian, copy the Clash/Mihomo URL from the dashboard, then import or update it in your client.