I have already verify my email, but why does an unverified warning appears?

After registering an account, the system will send a verification letter to the registered account. You need to go to the email and click the link in the letter to return to the account center to verify the email.

If the e-mail is not verified, a warning will continue to appear when logging in. If the e-mail is not verified within 14 days, the user will be blocked and will not be allowed to continue to log in, and the e-mail must be verified to continue.