When you try to reamp, do you see the Input LED flashing on the Kemper ?
If not, then you are not sending the DI signal back to the Kemper. (I got similar issue ressently).
So to trouble shoot that, you need to check all the steps:
-In your DAW, have you created an output pointing to the Digital Out of the Audient ?
-In your DAW, make sure your DI track out is configuted to use this DAW output, pointing to the Digital Out of the Audient.
-And then, in your Audient software, do you see any signal coming from your DAW to the Digital out ?
IMPORTANT: if you have a fader for the Digital Out in your Audient sofware, make sure it is fully up! (This was my problem).
-After that, you should see the Input LED flashing on the Kemper. If not, you may have a connectivity problem with your conversion dongles. They have a direction, make sure it is properly connected.
-Also, on the Audient, the clock source should be set to External. It's the Kemper that is supposed to be master.
Hope it helps