If rotating datacenter proxy - GB cannot be connected, please troubleshoot one by one according to network, traffic, parameters, authentication, protocol and target website response.

Connection failed or timed out

1. Confirm that this machine or server can access the Internet.
2. Confirm that the current network can stably access the MaskProxy backend and proxy gateway.
3. Check whether the host and port are copied completely.
4. Minimal testing with the background cURL example.

Authentication failed

1. Copy the username and password again.
2. Check whether there are extra spaces, newlines or Chinese symbols.
3. The confirmation tool did not fill in the username and password backwards.
4. If credentials have just been reset, replace the old credentials in all tools.

Inconsistent regions

• Different IP databases may show different results.
• Query website cross-validation using multiple IPs.
• Confirm that the backend region does not retain its default value.
• When it is strongly dependent on an area, test with a small flow rate first.

Slow speed or abnormal consumption

• Reduce concurrency.
• Increase the timeout period.
• Reduce failed retries.
• Turn off unnecessary resource loading.
• Compare traffic statistics and task logs.

Preparation before contacting support

• Product type, problem time, region, agreement, time limit.
• Use tool name and error screenshot.
• cURL Minimal test results.
• Do not send full passwords, full API URLs, or full proxy strings to public channels.