Why can't Hunan cadre training network college use mobile phones?

There are many visitors due to network failure.

1. Due to the network signal problem, the client of mobile phone logging into Hunan Cadre Training Network College can't communicate with the server in time, and can't log in, so it needs to change the network.

2. There are too many people visiting the school website, and the bandwidth is limited, so you need to log in at a different time.