Install the font first before use.

How to install font
windows :
https://www.fontspring.com/support/installing/how-do-i-install-fonts-on-my-windows-pc
mac :
https://www.fontspring.com/support/installing/how-do-i-install-fonts-on-my-mac

How to use open type features
https://helpx.adobe.com/illustrator/using/special-characters.html

Note:
You must install the OTF one to access the alternates


Thank You,
Sarid Ezra - www.saridezra.com