UNITY 3D (2017) EXPERT NEEDED

I have 2 issues on unity game: 1- we use android ranking service to display our hi-score ranking, this is not working on iOS, we need someone to fix the ranking service or to use another one on iOS 2- when we lose the game we have option to watch a rewards video (admobs) and get a second chance to continue where we left off. this is sometimes not working well You need to compile and upload the game on both ios and android. The code of the project is available here: [login to view URL]