ANSWER:

The prophet salla allahu alaihi wa sallam had never prohibited non Muslims from entering madinah. We have authentic hadeeths where they even were allowed in the masjid of the Prophet salla Allahu alaihi wa sallam. 

Honourable sheikh are non Muslims allowed to enter madinah. I have seen some non Muslim youtubers entering madinah. I don’t know more about those videos. I’ve also heard that non Muslims are not allowed to enter haram area. Some people tell that in madinah only the masjid is haram and outside the masjid non Muslims can enter. What is the reality