So, we learned that it'll be a problem until we receive certification from Apple. To do so, we would have to buy a Mac, sign up for Apple's developer program, and pay a yearly fee. It's not something we have time or funds for right now. So until then, in order to run the game, you need to follow this guide we found on the Unity forum:
We'll try to have the game properly certified in the future, but for now, it's the only way to run it.