https://documentation.meraki.com/MR/Group_Policies_and_Block_Lists/Using_RADIUS_Attributes_to_Apply_Group_Policies ... View more

Is the public IP address the same?  Does the RADIUS server log show anything?  Is the inbound NAT on the firewall still in place?  Is the RADIUS server running (perhaps it crashed)? ... View more

It's very easy to setup on the Meraki dashboard side, simply IP address and shared secret of your sever and you're good. Just make sure if you have a firewall between your access points and Radius server then you allow access.  ... View more