After loaded your config file: When you look at SystemHealth you don't see the Red config alarm ?
Click on red [ ? ] close to config alarm: that tell you there is something wrong with flightmode.
Next step, go to Input tab > flight modes and check whats wrong.
See where you set a "Manual" for Yaw axis: replace with "Rate" or "Axis Lock": Stabilized 2, Yaw
Set the arming mode to Yaw right for example and now you can arm.
Another issue, you should set PWM rate in output tab.
For bank1 (Green) and bank2 (Cyan) set to 490Hz and should be file for the 3 motors outputs. If flied using this settings, it should be horrible for stabilization.