Every part must have the exact same prefix. If you renamed 5DGUPNZ17B.part1.rar to Game.part1.rar , you must rename all other parts to match.

Ensure there are no leading or trailing spaces when copying the password. Try typing it manually if copying fails. 5. Safety Warning

Part 1 of a multi-part RAR is usually a standard size (e.g., 500MB, 1GB, or 2GB). If the total number of parts is known, you can estimate the scale of the content.