Solved:
1. Get Arturia Sofware Center
2. Go to Explore Products
3. Get MIDI Control Center
4. Open Cakewalk
5. Press P or open "Preferences"
6. Go to Device and check Arturia KeyLab & MIDIIN2
7. Apply and go to Control Surface
8. Add new (Yellow star or shine icon)
9. Select Mackie Control then MIDIIN2 on both in/out
10. Click Ok, Apply then close.
11. Like this post and Enjoy!