Direct answer
Traffic can be consumed quickly by video, cloud sync, app updates, multiple devices, Global mode or background apps routed through TUN. Check the provider dashboard and local traffic view together.
What to check first
Traffic, renewal and device limits are normally enforced by the subscription provider rather than the Clash client. Clash can show symptoms, but the account state comes from the provider dashboard.
- Open the provider dashboard to confirm plan status and remaining traffic.
- Check device limits and simultaneous session rules.
- Refresh the profile after renewal or plan changes.
- Separate provider billing issues from local client configuration.
Recommended handling
Use the provider dashboard as the source of truth for plan state, quota, renewal and device limits. After the account state is correct, refresh the Clash profile and then troubleshoot local routing only if the same symptom remains.
Practical notes
- Traffic, billing and device limits are provider-side data, not local Clash settings.
- 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.