What is the problem that cannot be used after the app?

Mobile phone downloading APP doesn't work. First of all, we must confirm whether the APP is officially genuine and whether it is still in use. Please consult the corresponding merchants. Second, open the APP after downloading. If it is prompted that it has stopped running, please check whether your mobile phone network is connected to the network. If there is no problem with the network, check whether there is permission to set this APP in your mobile phone security settings, such as refusing to access this APP. If yes, you need to select Allow, Allow All. Then open the APP. If there are no other problems, there should be. It is very important to ensure the security of this APP, avoid viruses in informal channels and prevent property losses, remember.