Correct errors, bugs and advertising -- 3

Hello, I have an application and it presents errors and bugs, I would like to find a developer to correct these errors and correct the appearance of advertising, because this application is installed and used but Admob income is very low, I resume : 1) correction of the buges, errors, crashes 2) correction of the appearance of advertising (fix ad appearances on all phones, fix ads after the Start button and the button + ) 3)publish the project on Google Play Store the link to my app: [login to view URL]