There has been a temporary suspension on Thai AirAsia X service after the International Civil Organization red flagged it. The organization has concerns regarding the airline's safety standards and as a result it has been given four months to make the changes necessary and ensure the standards have been improved. The suspension is for flight service to Sapporo yet its’ Osaka, Tokyo, and Seoul routes are still taking place on schedule. Passengers who have bookings on the airline for flights that take place during the four month suspension will either need to change their destination to Tokyo, which is being offered for free, or they need to switch their travel dates if they still want to fly to Sopporo. Another option is that they can get credit with the airline and just book again at another time.
The above article is a summary. Please see the source article at Google News.