Ur22 with Slate Ml-1

Plugged my Slate Ml-1 into my ur22.
Getting no sound or signal .
Applied phantom power.
My other mics work fine.
Any ideas?

Bad cable?

Could it be a Slate Digital software problem??

" Combined with the Slate Digital tube microphone modeling software, it can sound like some of the most classic microphones in recording history."

If I apply the soft ware on a pre recorded vocal track, the soft ware responds as it should.
Am I missing something in the set up?

I am not familiar with Ur22, or with Slate Ml-1 system. I am just throwing out ideas.

I am assuming the modelling software is a VST plugin. If so, have you tried adding Slate software to the input buss?