1. Network problem: The current network environment is unstable or congested. You can try to switch to another network environment, or wait for the network conditions to improve before accessing.

2. System failure: the campus group buying system fails or the server fails, which makes it impossible to access this page. You can try to contact the technical support department of Jinbang Wenxuan Bookstore for help.

3. Personal account problem: The personal account is abnormal, such as the account is locked or the access right is restricted, which makes it impossible to enter the campus group purchase page. You can try to contact the customer service of Jinbang Wenxuan Book Mall through other channels for consultation and solution.