Ios & Android Game changes and modifications

Hi, Below I have listed all the changes and modifications that I need made to my app. My budget is max $250 please do not bid if you are going to need more than $250. Thank you 1. A popup that asks the user to type in their username upon first downloading and opening the app. This username can not be changed. (Ios & Android) 2. A working leaderboard system that will show the top points or (coins) leaders across both platforms. I need a small icon on the main screen that the user can click to see these leaderboards. I also need a way that I can manually reset all point or (coin) balances when I chose to do so. 3. Change the scoring system so that the player is rewarded with 1 point (coin) when successfully passing through a circle and 2 points (Coins) if they pass through the star in the circle. 4. Add a feature so that the speed of the game increases after every 20 points (Coins) collected. This is so that the game is increasingly harder. and not mindless 5. Add a button in the settings menu that says "Wallet Address" all the button needs to do is open a text field where the user can type text and send it to me. 6. Change the name on the splash screen These last few things I would like done if you are able. 1. Check the game for any performance issues, I have run into a few performance issues with the game and would like you to look over the code to see if you can find anything that may be causing these issues. (Ios & Android) 2. The joystick is incredibly small, I would like to have it bigger or if you have a better way of controlling the ball I would be interested in seeing how you would do it.