Royal Jordanian set some rules and regulations for the passengers. if you don't follow the rules then you have to pay for it. If the passengers are making changes online then they don't have to pay the Royal Jordanian change flight fee. on the other hand, passengers are making changes offline then they have to pay 60USD to make changes in the flight tickets.

https://airlinespolicy.com/flight-change-policy/royal-jordanian-flight-change-policy/