1. Network problem: If your network connection is unstable or the speed is too slow, the App cannot be opened normally. You can try to switch to a better network environment, or close the network and reconnect to see if you can solve the problem.

2. Server problem: The server of Parknshop Supermarket (Hong Kong) Co., Ltd. may be out of order, which makes the App unable to open normally. You can try restarting the device, or try again later to see if the problem can be solved.

3.App version problem: If the version of the App you are using is too low or incompatible with your device, so that the App cannot be opened normally, you can try to upgrade the app version or uninstall and reinstall it to see if it can solve the problem.