Customize App Script

I have purchased an app source script this is some important info about it The game was made in java using android studio, but it can be imported into eclipse; it was created using a libgdx framework which is also pure java so please have plenty of knowledge about this code work The game is called Space Dodge (android devices) i also have an android developer account the game basically is about swiping your finger to get around platforms I want it customized and any bugs fixed that the script may have so be very knowledgeable i want to customize it with the following 1. when going around platforms you can also collect tickets 2. referral aspect (so users get credited for downloads/plays) 3. Add my logo and reskin 4. Verify in app purchases/ads working 5. amazon affiliate page redeem tickets for purchases