Want to try rhino5 in Mac, do I need license?

When I opened it, it’s asking for license and did not allow me to open the software. I checked my mail inbox. It doesn’t have any email from Rhino? what should I do? I just want to try the system in OS system.

Make sure to also check your spam folders in case the eMail with the key ended up there.

Thanks but …nothing there also. T_T

May you hve to try a second request. But only for the license information. You can keep the download and the installation.