Hello I followed all the connection steps between my T-motor F722 mini stack
and the Dji Air unit then I connected the remote control to the Air unit everything seemed to be fine,
but after arm the drone when I push the throttle past the middle the drone goes up to full power and throttle not responding.
Could anyone help me have this problem?

T-Motor Mini F45A+Tmotor Mini F7+Dji Air unit+Dji Controller+Emax eco 2306 2400kv

I have an almost similar stack but I dont use the DJI controller. Have you check with Betaflight whats its (re channels specially throttle) doing when moving stick. You can also try and remove the props and try it the same scenario see if its doing the same, specifically the no throttle response pass the midpoint. A video would be helpful as well.