If you cannot find your login details or need to retrieve a license code associated with an older version:
Most "free" registration codes found on the internet are either already expired or invalid. HitPaw, like most modern software companies, uses a server-side verification system. When you enter a code, the software communicates with a server to verify its authenticity. If a code has been blacklisted, used too many times, or generated by a keygen (key generator), the server will reject it. Hitpaw Video Converter Registration Code