If you can only tilt the camera axis when using a finger on the tanker screen to move the camera, then chances are you have the gimbal in 'follow' mode. For both pan (yaw) and tilt, it needs to be switched to 'free' mode by taping the arrow button on the left middle if the screen, that should pop out a set of 4 arrows which are: Current setting-Follow-Free-Recenter. Pick the 'free' mode.
If the pilot wants to move the camera, then rotating the left wheel on the rc will change tilt, Pressing and holding C1 while rotating the left wheel will change yaw (irrespective of gimbal mode in latest firmware versions).