![](https://play-lh.googleusercontent.com/a/ACg8ocKvidpJeGwFCqXsfhjNwFUT-0dC-RmGu6-1uPzZllOi-Q5xJw=s32-mo)
angel Chan
There was no charge for installation this apps before. Suddenly, there is an annual fee. The alarm has been installed and it is impossible to refund. Then now it is no choice to pay annual fee. If I know, I never choose this brand. Also, the apps is too slow. When u open it, u need to wait 20seconds. It is very inconvenient to open or close the alarm.