Always start the extraction process from the or the main .zip file , not Pt3.zip .
Built-in Windows/Mac zip utilities sometimes struggle with multipart files. Using a dedicated tool like 7-Zip is highly recommended for these types of archives. Pt3.zip
All parts must have the exact same base name to be recognized as a single set. 2. Rename for Consistency (If Needed) Always start the extraction process from the or the main