Importing a Midi on ipad comes up with the wrong notes and no piano keys just falling particles

I am using and ipad and Cubasis to create my midi. When I import it the particles fall but no notes or lights show up, they just fall through the keyboard. This has happened with 2 pieces of mine while others have been fine. Is there a midi setting I might be missing? Also worth noting that the notes are completely different to the midi as well