ChatGPT Plus users often face subscription failures, payment errors, or account issues. This article summarizes common error codes and their solutions, helping you quickly restore service without repeated frustration.
Subscription Payment Failure: Error Codes & Card Solutions
If you see "Your card was declined" or an error code like 402 Payment Required, it's usually due to bank risk control, insufficient balance, or card issuer restrictions. First, check if your card supports international online payments and ensure sufficient funds in your account.
For Chinese domestic credit cards, try contacting your bank to remove cross-border spending limits, or switch to a Visa/Mastercard that supports USD transactions. After multiple failures, OpenAI may temporarily lock the card—wait 24 hours before retrying.
Account Locked or Login Errors: Common Codes & How to Unlock
Errors like 429 Too Many Requests or 403 Forbidden mean your IP or account is temporarily restricted. This often happens after frequent network switches, shared IP use, or triggering risk rules. Switch to a clean IP (e.g., home broadband) and pause all activity for 4–6 hours.

