Here are some solutions you may need to register Mobile Transfer:
1. Please check and confirm your email address and registration code whether you typed/pasted correctly.
2. Please check whether you download the correct version of program.
3. The installation and registration of program should be in the condition of Internet.
4. Any error message you got? If yes, send the screenshot to email@example.com to analyse and solve.
If you have not registered the program, you just can use trial version which has limitations. You can free transfer 30 contacts, 100 photos and 100 media files at most. You can use the free trial version in 30 days. The software will give you the information in the launching page.