I needed to verify my phone number twice: first when I created an account, then another for binding it to a specific phone. You can give this a shot, it worked for me. Log in to your account on your phone and verify it's found under devices. Then log in on the web, go to messages and click on +, no need to fill anything. This will trigger a verification. Requesting the unlock worked after this
(yet another sms one time code). The form is a bit silly, it didn't work with any non-chinese characters
(yet another sms one time code). The form is a bit silly, it didn't work with any non-chinese characters