Cubasis 1.7.1 vs Focusrite iTrack solo

So I’m having the same issue, can’t record the guitar…doesn’t seem to be recognizing the imput. Using the Focusrite isolo. It works with the Tape app, but it’s to basic for what I want to do, but it know that the system and connections are working properly since I can record using that app.
Tried to switch the mono setting as suggested by previous post but only giving me imput 1 as an option (everything else is “greyed” out) any thoughts or suggestions on how to correct this?