Unfortunately, the text at the top makes this game break the rules, as the resolution is no longer 48x84 - an easy way to check is to downscale a screenshot of your game to 48x84 and see if it looks the same: https://imgur.com/Bg5zvkj
Regarding the gameplay, early on, the player is just waiting for the ball to come back - there's no challenge at all. I'd increase the ball speed, add multiple balls to take care of, make the ball bounce off in different directions depending on the ball's position relative to the pallet - anything to make the result depend on the player's skill and not their patience. At the moment, player interaction only results in moving the pallet to the correct position, which is way too easy with the current ball speed.