No luck. The game won't launch :/
IIRC there should be a log file written to the engine's directory. I am not sure how that works on Android, but maybe it's there. If it is, can you check the very first lines of text there (should say something like "Adventure Game Studio Interpreter, ACI version A.B.C.DDDD")? That will be useful to know, if possible, what version of engine this APK actually is.
Speaking of which, is there any way to easily downgrade the version of AGS your game is currently using?
Generally - open in the previous version of the AGS Editor and save project. But this will fail to load automatically, because of slightly different project format. I think it's possible to convert project file (Game.agf) by manual edit (it is plain XML).
By the way, which version of the editor do you use for your game? Is it the official 3.3.0 release, or some "experimental" build?