Open CONFIGURATION / CONNECTIONS and ensure that the MIDI connection for Kontakt is enabled as a SOURCE (for input data). Looks like the DESTINATION to KONTAKT is working.
Open the log and watch for any data appearing when you make the changes in KONTAKT. If there is no data appearing, then you need to configure KONTAT to transmit data when changes are made there. I do not own KONTAKT, so I am not familiar with those settings.