Avid HD/IO protools hdx

Has anyone successfully run SonarWorks with a protools HDX pcie card? I'm running OSX10.11.6 on a Mac Pro. My audio interface is an Avid HD I/O connected to a HDX card. In the AudioMidi Utility, a protools aggregate I/O appears but not my HD I/O nor the hdx card. Therefore, SonarWorks cannot communicate with my interface making the program useless to me. I was screen sharing with (the very helpful) support team this morning and couldn't find a solution. Any thoughts?