AirAsia no checked baggage flights
I am looking their flights between Indonesia and Thailand, direct. Was checking for example Jakarta - Bangkok. All flights I select say "This is a no checked luggage flight" and limit is 7kg for carry-on. Does anyone know anything about this? Other than AirAsia, there are limited options for travelling between the two cities and AirAsia has direct flights and good timings. I can't even purchase additional baggage.