2nd - You might want to test the buttons work with one of the test apps 1st - i.e. ain64_din128_dout128_v2_0.zip found here: http://www.ucapps.de/mios_download.html
Then once you’ve established you’ve got working buttons on the LCD, and the midi works (cause you’ve uploaded the app) - go to the ableton preferences and make sure you have the TRACK, REMOTE etc etc turned on for the midi interface you are using to connect to the box
as far as the remote is concerned you might be best off using a generic setting at the moment
also - don’t forget to map the midi to the buttons in Ableton…
also if I memory serves me correctly some of the buttons on the MIDIbox64 are used exclusively for program changes and navigation so won’t be transmitting data.
you can still map midi events to buttons (et al) in Ableton even if you are in Mackie Mode, but as I recommened it’s probably better to use the generic remote setting for the time being to cut out a lot of other midi flying about