2. It's because the network in your area is crowded or a platform of the network where you log in is crowded. If there are many people surfing the Internet or logging on to the same platform at the same time in the same area (for example, everyone logs on to a chat website at the same time, which website can only carry half of the login people, it will cause serious congestion. ) will cause congestion.
3. The network connection is abnormal, and the current network may be unstable. You can try disconnecting the network, reconnecting and trying again.