I did the same in one of my apps. It's a private app, you need a login code to use it; Apple wanted to test all the features, so I put some fake screens in the

I did the same in one of my apps. It's a private app, you need a login code to use it; Apple wanted to test all the features, so I put some fake screens in the app, those screens didn't even make API calls. I set a timer for two weeks, after those the app started having its real behavior, with API calls and everything. The whole Apple app review is a joke.