Im having a similar problem .
the first time i've installed everything it worked perfectly but i had to reset my computer to fabric default and delete a lot of stuff (including all of my line 6 software) because my pc wasn't working correctly ( something related with my wifi adapter and processing speed). So i've reinstalled podfarm 2 newest version from the line6 homepage and all the drivers and stuff, plugged in my device, and i registered the device to my line6 user i autorised my UX 2 i have audio output (when i play music with it works) but when i check pod farm to see if my microphone is sending any sound it dosn't work, well pod farm works, but i don't hear anything and it seems as the XLR ports are not reciving any sound. I have a condenser microphone and i've tried with and without phantom power and dosn't seems to be any diference.
Any suggestions?