Current ManyCam requires periodic internet validation. If you stream in a remote location or a secure studio without internet, version 4.0.52 works entirely offline.
If the official website doesn't have the version you're looking for, you might need to use a third-party site. Be cautious when using these sites, as they can sometimes bundle software with additional malware. download manycam 4.0.52 old version
If you have decided to proceed, follow this precise guide to avoid malware. Current ManyCam requires periodic internet validation