The banking system itself is under maintenance.

Solution: Generally, if it is really a system problem, the bank website will post relevant system maintenance announcements, indicating that maintenance is time, as long as we log in to the website outside the maintenance time.

At present, the number of visitors in the banking system exceeds the number that the banking system itself can carry, which leads to the sudden collapse or congestion of the system.

Solution: Come back to the website once in a while.