If you haven't done so already, open up Traktor and click the gear
icon after downloading the files.
In the Controller Manager click on Add... > Import TSI > Import Other... as shown in the screenshot.
Navigate to your download location and select one of the mappings you've just downloaded. Set the In-Port and Out-Port to
the MIDI session you created for your phone and then do the same with the other mapping.
If the mappings do not appear in the Controller Manager, update Traktor.
Now, as soon as you hit some buttons in the app, Traktor should give feedback and vice versa. Have fun :)