By default, macOS only allows users to install applications from 'verified sources'. In effect, most attempts to install software from the internet or physical media.
Please go to Installation Error on Mac to learn more details about the installation errors.
If you have been trying the license a different times and even with different wireless connections, but always fail to activate the license. The following three methods will be provided, please try again to solve the problem.
- Check whether the local network connection is normal, and retry to switch to a different network to try to activate.
- Check the computer firewall or anti-virus software, whether there are network restrictions on some areas or software.
- Check whether the router has restrictions on network requests in some areas.