Help. Does anyone who have experience this problem with their QQ account?

I try to login the QQ for IM(chatting).

I am using maxis number.
I can login to this account but it ask for SMS verification that I set about one year ago. I can receive the verification number on my number when I first register.
But now the problem is that when it sent the verification number to my mobile number, I never receive the verification even after an hour or two.

See attachment, I ask the the QQ customer service thru wechat and got response. I followed their instruction, I managed to change the verification mobile number but before it can be changed QQ will sent verification code to new mobile number in order to verify, but same I still never receive the verification code after waiting for some time. Try with another mobile phone number still the same (not shown on attachment).

This what I receive from QQ thru wechat:
[attachmentid=9715749]

This is the process I have done:
[attachmentid=9715750][attachmentid=9715751][attachmentid=9715752]
[attachmentid=9715754][attachmentid=9715757][attachmentid=9715758]
I also has Baidu (百度) account (for cloud storage) , but I have no issue with it as I can still receive verification code on my phone numberfrom baidu.
Thank you.