You can carry out the following troubleshooting steps:
1. Country Selection
The selected login country must match the registration country (e.g., a European account cannot be logged in from the USA).
2. Issues with the Verification Code
① First, check your inbox;
② then check your spam folder;
③ check the account settings (whether a reception block is activated);
④ if the reception block has been lifted but messages are still not received, we recommend using a different email address (e.g., a Gmail address) for re-registration.