1. Solved family network connect problem and device network connect problem in iOS 14.5+

1. Compatible with iOS 14
2. Optimize sign in logic
3. Fix known issues

1. Fix known issues.

Support iOS 13

1. Add the description of not supporting the 5GHz network to connect;
2. Fixed some bugs.

Optimized the experience of the connection process

Remove the heat mode from the app.

1、Compatible with iOS 12.1
2、Fix bugs and known issues