Debug my iOS app and submit it to the App Store

I have the entire complete xcode project and backend files for my iOS app. The app is a conference calling app where users can share photos and videos and join calls of many people, as well as add friends on the app. I have all the front-end and back-end code for the app complete. However, I have recently run into a problem where the calls on the app are not working. Therefore, I need someone who can debug the font-end and back-end code files for the app so that the app can once again be fully functional. The app was working, but now there is a problem with the code that I need help to fix. Once you fix the app, you will need to submit it to the app store for me. I am looking to get this done in a week or two, so if you cannot work fast, then do not apply for this job. Please respond to this job post with the word "boss" at the top of your proposal so that I know that you read this entire description. I need someone who works fast and is very responsive. I only do payments once satisfactory work is completed and I need this done in one to two weeks.