The mod is often tied to a specific version (1.20.3). If the official game has updated (current versions are 1.48.0 or higher), the mod may no longer work or could cause data corruption.
Using mod menus in a game with online components like Last Day on Earth carries a very high risk of a permanent account ban.
Since these APKs are not from the Google Play Store, they may contain malware. It is critical to scan any download with reputable mobile security software.