Troubleshoot from the network layer upward.

First Checks

1. Confirm the plan is active.
2. Confirm balance or traffic is available.
3. Confirm Host and Port are copied correctly.
4. Confirm username/password or whitelist settings.
5. Test with cURL before testing a browser or scraper.

Common Errors

Symptom	Likely cause	Fix
Authentication failed	Wrong username/password or unsupported auth method	Reset credentials or switch auth mode.
Timeout	Target unreachable, wrong port, network firewall, or overloaded client	Test another target, increase timeout, check firewall.
Works in cURL but not browser	Browser proxy format or protocol mismatch	Re-enter host, port, protocol, username, password.
Region looks wrong	Geo filter too broad, target cached previous location, or language mismatch	Align geo, cookies, Accept-Language, and timezone.
Accounts become unstable	IP rotation conflicts with identity history	Use static residential or sticky sessions and align browser profile.

Escalation Data

When contacting support, include product type, target region, auth method, Host, Port, approximate time, error message, and a minimal cURL test result.

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