Unity ads and IAP does not work at IOS

BE FAST PLEASE, IT IS IMPORTANT! Hello, I am trying to submit my game to App Store and I keep getting the same errors. So I would like to fix them. (Control project and repair it) The game was created in Unity 3d. In the game I have ads and IAP. Everything works fine at Android but at IOS ads will never launch (always say there is no internet connection) and the IAP buttons after pressing will not do any action at all. Also the game is a bit slowed down at IOS platform. I have already created all the neccesary things in developer account in apple I just need to solve the issue why ads and IAP does not work at IOS... In unity it seems it is okay but then I open it at Xcode and it says a few issues (not errors). So I would need from the developee to test it and tell me if the problem is in unity or in xcode and then repair it to get it work. The developer that was making me a code scripts for the game said that he thinks there is no mistake in the script but I think that it is something wrong with a script because otherwise I have no idea where the mistake could be. I need a developer that is master at Unity 3d and Xcode.. Also that has experience with uploading or initizaling IAP/ ads at IOS platform... Please note that you will be payed after the submission will be approved by Apple. PS: The budget is up to 20-50€, depends on quality and time... PS 2: If you will be unable to to solve the issue you will not get the money...