1. The program can't be opened because it is from an unidentified developer?

A: This problem is caused by your Mac setting, please go to System Preferences ->Security & Privacy ->General, Allow apps downloaded from Anywhere, and try to start our software again.

A: Download the software you want from our website and install it. When you perform the conversion, a registration request window will pop up. Please ignore it and directly click Later button, and then you get the trial version.