Quoted from the upload page:
Supported Plugins and Behaviors
Below is a list of all our supported plugins and behaviors. If your game is rejected, check that your game only uses plugins/behaviors on this list.
Plugins: AJAX, Arr, Audio, Button, Browser, C2WebSocket, Dictionary, Facebook, Function, gamepad, Geolocation, googleplay, IAP, List, Keyboard, Mouse, NinePatch, NodeWebkit, Particles, progressbar, ScirraArcade, shadowlight, sliderbar, Sprite, Spritefont2, Text, TextBox, TiledBg, Tilemap, Touch, Twitter, UserMedia, video, WebStorage, win8, XML
Behaviors: EightDir, Anchor, bound, Bullet, Car, custom, destroy, DragnDrop, Fade, Flash, jumpthru, LOS, NoSave, Pathfinding, Persist, Physics, Pin, Platform, Rotate, scrollto, shadowcaster, Sin, Solid, Timer, Turret, Wrap