Ios health and fitness software can't be used. You can shut it down and restart it. You can close and restart the application software, and some minor problems will get better after the software is closed and restarted. Part of it is that there is something wrong with the network settings of the software, and the network signal is poor. You can disconnect the network again and connect to other network new numbers. Part of it is caused by the low version of the software system, which needs to be updated to the latest version before downloading. .