A password protected archive file like a zip can be processed by adding its password to the ArchiveExtractor configuration file (ZyLAB.EDiscovery.Processors.ArchiveExtractor.dll.xml). You have added the correct password to the config file but the extractor still fails.
The password section of the archive extractor needs to be enabled. It is disabled by default.
The password section of the ArchiveExtractor configuration file is commented out by default.
Please check the ZyLAB.EDiscovery.Processors.ArchiveExtractor.dll.xml file (typically located in C:\Program Files (x86)\ZyLAB\EDiscovery\Ediscoveryservice\Assemblies\Performers).
Remove the <!-- and --> at the start and end of the <!CDATA section.:
3.0; 3.1; 3.2; 3.3; 3.4; 3.5