1.

The computer is not connected to the INTERNET or its access area is restricted;

2.

The IE version is too low and the password is too low. Insufficient digits and incorrect IE parameter settings;

3.

After submitting the points redemption order, a network communication failure occurred midway (the network speed was too slow, the modem dropped, etc.), resulting in the submission Interrupted or failed;

4.

Log in with a random password;