The HTML5 version I cant control or do anything because for Somerson it doesn't let me click on the game. So I think you need to fix that too.
Glad you got it working. I double checked the windows version and that worked fine for me as well as the online version.
Here are the controls:
Hold shift for a couple seconds to put the throttle at full (control reduces the throttle but you don't normally need that), then use S/W to control up/down, A/D to control tilting left/right, and Q/E to control rudder left/right. Press C if you want to toggle camera modes, and press R or T if you get stuck. Press H to toggle the help menu. That should be about it!