tipztv I may not have included the most recent clay.js and api.css in the plugin folder. Updated it, maybe that will solve things? Which splash screen are you talking about? Unless it's the custom loader I put in, Clay.io shouldn't affect the loading of the game itself.
Snooba - are you trying to call any specific functions before Clay.io is ready (a separate condition)? This might happen if you try calling the player login before the plugin has loaded (player login is actually called at the beginning if the player is logged out regardless)