Meditab Software Senior IOS Developer interview questions

Initially they give a link for aptitude test which we have to give online and should score more than 70% or 80%, which is harder, after they schedule a technical interview and then practical round. I selected for practical round and they give me practical, as i'm using lower version of Xcode because I don't have my own apple system, I'm using my company PC, The senior developer didn't able to run my code that's why they rejected me.