On iPhones, you cannot install an old version directly. You must sideload it. Apple regularly revokes enterprise certificates. If your old Moviebox Pro stops opening and crashes instantly, the certificate has been revoked—not the app's fault, but Apple's security.
While it’s common for users to seek out older versions of apps to bypass newer restrictions or technical bugs, using an outdated version of MovieBox Pro requires caution due to security risks and compatibility issues Why Users Seek Older Versions Login Troubleshooting : Some users have found that installing an moviebox pro old version