FSSO TS Agent issue

Hello all, I just set up FSSO DC Agent and it is working correctly, when a user logs in to the their local system it notices their log in and associates the user with the traffic in the web filter of the fortigate. As expected it wasn't working with the terminal servers that we have so we installed the terminal server agent and got it configured. It appears to be working correctly in that when I look in the fortigate under Monitor > Firewall User Monitor users signed into the terminal server show up and the method is FSSO Citrix not Fortinet Single Sign On like the local system so its talking to the fortigate but when I look under the web filter traffic users are not associated with the traffic. If I look at the details of a request, the source port corresponds to the correct port range in the Collector Agent Logon Users List on the domain controller, so everything appears to be correctly set up but I can't figure out why the user isn't being associated with the traffic like I would expect.

We are using a Fortigate 100D with firmware version 5.4.1 FSSO Agent and TS Agent 5.0.0250

Any help is greatly appreciated to help get this working.