1.DO NOT delete, rename or move the folder .galleryvault_DoNotDelete_*** or any file in it.
2.When an app is uninstalled, some files cleaning tool (E.g. Clean Master) may notify you to delete the files generated by the app. If you want to uninstall Gallery Vault temporarily and use it later, make sure do not conform to delete when a dialog jumps asking you whether to delete the files generated by Gallery Vault.
3.If you are using some cleaning tool, please make sure not to delete any files of Gallery Vault.
4.If you want to change your device or factory reset your device or change the SD card, please backup your files first(Refer to the upper section "How to backup and restore").