This account "little...." was suddenly self logged out in my Iphone, when I tried to log in, the log in procedures changed and requires to scan QR code or create password. However, even I create a password, your system did not allow me to continue because too weak (But I think it is so complicated) and I tried many times and did not allow me to carry on. When I went back to enter again, it shows me that it is not allowed to do upon trying many times till next day. I don't know why in the previous re-log in procedures is so convenient and can be proved by other logged in phone or notebook for verification but now definitely impossible. It becomes more frustration to do so. Very disappointed.