Why the app need the permissions for location?
In order for the tool to connect to the phone, the mobile app must obtain the SSID information of the tool's own WIFI, which is the name of the WIFI network.Technically, the location of the user can be inferred from the SSID, so IOS and Android assume that the user must authorise the location information to the app in order for the app to access the SSID information.
Why the app is frozen?
Most likely you have denied the above necessary permissions. Uninstall the app and reinstall it, agreeing to the necessary permissions to get back to normal!