Hi peeps, sorry to have to do this but I’m really struggling with this. Forgot there was a new forum here so this is late. Maybe I could have saved some frustration. Specs are either OSX Ventura (silicon) or Win 11. Same results on both between 3 computers.
First, the good. I’m not a fantastic key player, but to me these are the best I’ve used. The pads are excellent as well and Live integration has been excellent (though I mostly use my Push 2 for that. But still, there are some things the Keylab does with more ease.
But other hosts? Not so much. First, Reason 12. Though it has a map native, I can’t get the knobs or mixer to work properly. I’ve read up on it with the manual and youboob, but just can’t pin it down. I think explaining the painstaking things I’ve tried would be a waste of time, but I’ll answer any question. It’s not critical because I mostly just use it for the Reason Rack in Live right now, but it tasks me 
Reaper doesn’t count anymore because I’ve decided to concentrate on just Live for composing and Luna for mixing*. Tried it when 7 was released though and couldn’t get anything other than keys/pads to work no matter what I did. Personally I feel better docs should be out there. Since you have a native map for that, maybe an updated vid?
*I only use Luna for mixing, but I cannot get (again) faders or knobs to do anything.
One other thing, Live and Luna and logic when I was demoing it, certain controls/buttons send midi note messages. In Logic, there was an excellent vid somewhere with rather different setup instructions that solved this. I figured it out in Live, had to uncheck a couple of things, now works fine. Reason doesn’t seem to do this, nor did Studio One (yes, I know, too many hosts! ) but the point is that some do and it can really drive someone to drink! LOL.
So in conclusion, there is much to like, but something is just not quite right following the directions for every user. I’ve seen a few vids so it’s not just me, but it’s not consistent from host to host.