Code-igniter Web App Bugs Removal

50% Payment of the project will be made after the work completion and and 50% after hand over the source code to us. Will not increase the budget of the app at any cost. So don't ask about increment of the budget. No project will be awarded and no milestone will be created without checking 50% of your work on our android app. If you can not fulfill above requirements then no need to waste my precious time. Many fraud developers first say that they will do the project but later they show their real image by saying that they need more money as work is more, this and that. If you will say the samething then I promise I'll sue you. There are some bugs in my web app, which is made using Code Igniter. we need to remove it.