Flutter Simple Project - URGENT - NO payment until results

I have bought a flutter project from Codecanyon. I need someone to assist me in building the IOS version of this project on my IOS account and get an IPA to use and test. Of course i also need to change the name, icon, launch screen. The project has a firebase backend that i will manage setup.
This project is urgent, and because of previous bad experience, no payment until result (You can check my rating)