So,
After weeks of programming and mapping 64 songs in the Kemper with PC changes, the Kemper turns automatically to Tuner mode and cuts out the sound when a midi signal is detected! When I switch is back to perform mode, the sound STILL doesn't output, but is does respond to the MIDI signal!
I can confirm that it is receiving signal from my guitar because the tuner is responding to my strings.
Please help someone!