The most immediate risk is that an old APK or IPA will simply not work. As the MovieBox Pro servers are updated, they often break compatibility with older app versions, leading to crashes, "No Video Found" errors, or endless buffering. Furthermore, these old versions do not receive security updates, leaving known vulnerabilities unpatched and exploitable by malicious actors.
Immediately open the Google Play Store (or your device's native app store), find your app management settings, and turn off automatic updates so the system doesn't immediately overwrite your older version. For iOS Devices (Apple) moviebox pro old version