1, switch the network and log in again to check: mobile phone, WIFI and mobile phone traffic have all been tried; The computer is nailed to the computer-the avatar in the upper left corner-Settings-Network detection to check whether there is a problem with the network.

2. Check whether the nail is the latest version: mobile phone nail-my-settings-about nail; Computer nailing-the head in the upper left corner-about nailing, if not, you can try to update the version or uninstall and reinstall it.