Fmc iPad Pro : B738/ N816NN -incompatible aircraft - enable to access the acf , flight management system
I don't know what they're doing! Novice pilot ! Help me please

I'm afraid the default 737 isn't suported sadly :( See:

http://haversine.com/forums/8/thread/374

You'll need to use the 737 modified by Zibo or another plane/FMC.

See:

http://haversine.com/airfmc

for a list of supported FMCs.

Sorry about the limitation but its beyond what we can do :(

joao @ haversine