If the above doesn't work, with your interface and keyboard on, open AudioMidi Setup.app and delete the profile. If your Mac is detecting the hardware, it should create a new profile immediately. I've had to do this many times over the years.
Finale 25.3 (2014.5, 2011 for Testing), SmartScore X2 Pro, GPO 5
2010 iMac 2.93G i7, 32G RAM, OS 10.12.4, 2T SSD
Overture 5.2.2-1, Notion 6, Encore 5.0.7, DP 9.13, 7.24, Logic Pro X
Legacy G4: OS 10.4.11/9.2, Finale 1998/2002