Cannot get effects loop to work properly.

  • Hey everyone - new Kemper user here!

    I'm trying to hook up a Mobius, TimeLine and Digitech Polara to the Kemper's effects loop, but I cannot seem to get it to work. I have connected the Mobius to the SEND, Mobius to Timeline, Timeline to Polara, Polara to RETURN. I have set my X as a MONO FX LOOP, but I'm getting the error message "no loop possible! Aux input is used". The Kemper is connected to a couple of speakers by the Main Output L/R. I can get some very FAINT signal from my pedals, but the volume is simply not enough to be useful. What can I do?