Ensure the app has access to storage and camera to save and load files properly.
First, ensure that you have the LMC 8.4 app installed on your phone. It is important to note that you must enable the installation of apps from "Unknown Sources" in your phone's security settings to install the .apk file. For Samsung devices, you may need to install a specific package like "Aweme" or "Scan3D" to ensure full lens support and avoid crashes.