Fly up about 30 meters without throttle control after unlocking my plane?

ArduPlane VTOL Plane
1

Haoying with Hobbywing Xrotor X6plus motor.

After about 30 meters, it stops rising and the tail starts spinning

00000091.zip (478.6 KB)
c-rtk 2hp directional ek—src1 设置为2
Above is my flight data