Hexacopter with apm is not flying in half throttle

My hexacopter with Apm after finishing all the assembling & connection work when i take a test flight there is a problem when i gave half or 50% throttle it’s not flying means the propellers were rotating but it was not going up and after i gave 90% of throttle then it is flying a little bit up and the second problem is when i do roll or pitch it’s going continuously on that direction i have to move the stick on other direction to stop.

Describe the components on the craft (motor size and kv, prop size and pitch and battery power 3S/4S/6S) and it’s take-off weight (including battery). And post a link to a .bin flight log.

Note: The APM Flight Controller hasn’t been supported in many years. I suggest you replace it with a modern unit.