Cannot Login to ONYX Account

I just bought Note 2. I tried to log in on but it never works for me. When I use a phone number to sign in it always gives the error that the verification code is wrong. If I used the email, the verification code arrives hours late and I cannot use it. As a result, I have not been able to login in to my new device and can’t setup sync or Lock Screen password.

As a new user of Boox, I liked the device so far, but their web service is clumsy.

Any solution from the community?