L2TP VPN help?

Hi,

I have a UXG-Pro and I want to be able to connect to it from my mac while I’m at work. I have the radius server enabled, and a user setup. When I attempt to connect I get the message “A connetion could not be established to the PPP server.” I have attempted to work around that by setting the VPN client config on my mac to use a static IP instead of PPP, but that didn’t help. Also note that the error message from MacOS is different if the L2TP server on the UXG is not enabled, so I think the first part of the connection is working.

I feel like I must be missing something obvious. This is running unifi network 7.2.95. Anyone have any ideas?