No AD setting in Pritunl

Pritunl Pritunl VPN
1

According to the instructions in the “Settings” tab, there is an option for Active Directory authentication. I am using the free version, and I couldn’t find this setting. Is this a bug, or is RADIUS authentication not available in the free version of Pritunl?

v1.32.4115.91 3c66f7

2

All the single sign-on options require an enterprise subscription.